http://www.rssboard.org/rss-specification 720 https://escholarship.org/uc/lbnl_ps_py/rss Recent eScholarship items from Physics Sat, 27 Jun 2026 14:48:10 +0000 https://escholarship.org/uc/item/5mg3n583 Differential cross section measurements are the currency of scientific exchange in particle and nuclear physics. The key challenge for these analyses is the correction for detector distortions known as deconvolution or unfolding. In the case of binned cross section measurements, there are many tools for regularized matrix inversion where the matrix governs the detector response going from pre- to post-detector observables. In this paper, we show how normalizing flows and neural posterior estimation can be used for unfolding. This approach has many potential advantages, including implicit regularization from the neural networks and fast inference from amortized training. We demonstrate this approach using simple Gaussian examples as well as a simulated jet substructure measurement at the Large Hadron Collider. https://escholarship.org/uc/item/5mg3n583 Fri, 26 Jun 2026 00:00:00 +0000 Desai, Krish https://orcid.org/0000-0003-2559-8910 Nachman, benjamin Pan, jingjing Mikuni, Vinicius https://orcid.org/0000-0002-1579-2421 Torales Acosta, Fernando https://escholarship.org/uc/item/5bq0x1w6 A model-agnostic search for Beyond the Standard Model physics is presented, targeting final states with at least four light leptons (electrons or muons). The search regions are separated by event topology and unsupervised machine learning is used to identify anomalous events in the full 140 fb-1$$^{-1}$$ of proton–proton collision data collected with the ATLAS detector during Run 2. No significant excess above the Standard Model background expectation is observed. Model-agnostic limits are presented in each topology, along with limits on several benchmark models including vector-like leptons, wino-like charginos and neutralinos, or smuons. Limits are set on the flavourful vector-like lepton model for the first time. https://escholarship.org/uc/item/5bq0x1w6 Fri, 26 Jun 2026 00:00:00 +0000 Aad, G Aakvaag, E Abbott, B Abdelhameed, S Abeling, K Abicht, NJ Abidi, SH Aboelela, M Aboulhorma, A Abramowicz, H Abulaiti, Y Acharya, BS Ackermann, A Bourdarios, C Adam Adamczyk, L Addepalli, SV Addison, MJ Adelman, J Adiguzel, A Adye, T Affolder, AA https://orcid.org/0000-0002-9058-7217 Afik, Y Agaras, MN Aggarwal, A Agheorghiesei, C Ahmadov, F Ahuja, S Ahuja, S Ai, X Aielli, G Aikot, A Tamlihat, M Ait Aitbenchikh, B Akbiyik, M Åkesson, TPA Akimov, AV Akiyama, D Akolkar, NN Aktas, S Alberghi, GL Albert, J Alberti, U Albicocco, P Albouy, GL Alderweireldt, S Alegria, ZL Aleksa, M Aleksandrov, IN Alexa, C Alexopoulos, T Alfonsi, F Algren, M Alhroob, M Ali, B Ali, HMJ Ali, S Alibocus, SW Aliev, M Alimonti, G Alkakhi, W Allaire, C Allbrooke, BMM Allen, DR Allen, JS Allen, JF Allport, PP Aloisio, A Alonso, F Alpigiani, C Alsolami, ZMK Fernandez, A Alvarez Cardoso, M Alves Alviggi, MG Aly, M Coutinho, Y Amaral Ambler, A Amelung, C Amerl, M Ames, CG Amezza, T Amidei, D Amini, B Amirie, K Amirkhanov, A Dos Santos, SP Amor Amos, KR Amperiadou, D An, S Anastopoulos, C Andeen, T Anders, JK Anderson, AC Andreazza, A Angelidakis, S Angerami, A Anisenkov, AV Annovi, A Antel, C Antipov, E Antonelli, M https://escholarship.org/uc/item/4ft186gd In this work, we forecast the number of, and requirements on, N-body simulations needed to train hybrid effective field theory (HEFT) emulators for a range of use cases, using a hybrid of HMcode and perturbation theory as a surrogate model. Our accuracy goals, determined with careful consideration of statistical and systematic uncertainties, are 1% accurate in the high-likelihood range of cosmological parameters, and 2% accurate over a broader parameter space volume for k < 1 h Mpc-1 and z < 3. Focusing in part on the 8-parameter w 0 wa CDM+mν cosmological model, we find that < 225 simulations are required to meet our error goals over our wide parameter space, including models with rapidly evolving dark energy, given our simulation and emulator recommendations. For a more restricted parameter space volume, as few as 80 simulations are sufficient. We additionally present simulation forecasts for example use cases, and make the code used in our analyses publicly available.... https://escholarship.org/uc/item/4ft186gd Fri, 26 Jun 2026 00:00:00 +0000 Bartlett, Alexa https://orcid.org/0000-0002-3421-8724 DeRose, Joseph White, Martin https://orcid.org/0000-0001-9912-5070 https://escholarship.org/uc/item/2th9b7zj This paper presents the first observation of top-quark pair production in association with two photons ( t t ¯ γ γ ). The measurement is performed in the single-lepton decay channel using proton-proton collision data collected by the ATLAS detector at the Large Hadron Collider. The data correspond to an integrated luminosity of 140 fb − 1 recorded during Run 2 at a centre-of-mass energy of 13 TeV. The t t ¯ γ γ production cross section, measured in a fiducial phase space based on particle-level kinematic criteria for the lepton, photons, and jets, is found to be 2 . 42 − 0.53 + 0.58 fb , corresponding to an observed significance of 5.2 standard deviations. Additionally, the ratio of the production cross section of t t ¯ γ γ to top-quark pair production in association with one photon is determined, yielding ( 3 . 30 − 0.65 + 0.70 ) × 10 − 3 . https://escholarship.org/uc/item/2th9b7zj Fri, 26 Jun 2026 00:00:00 +0000 Aad, G Aakvaag, E Abbott, B Abdelhameed, S Abeling, K Abicht, NJ Abidi, SH Aboelela, M Aboulhorma, A Abramowicz, H Abulaiti, Y Acharya, BS Ackermann, A Bourdarios, C Adam Adamczyk, L Addepalli, SV Addison, MJ Adelman, J Adiguzel, A Adye, T Affolder, AA https://orcid.org/0000-0002-9058-7217 Afik, Y Agaras, MN Aggarwal, A Agheorghiesei, C Ahmadov, F Ahuja, S Ai, X Aielli, G Aikot, A Tamlihat, M Ait Aitbenchikh, B Akbiyik, M åkesson, T PA Akimov, AV Akiyama, D Akolkar, NN Aktas, S Alberghi, GL Albert, J Alberti, U Albicocco, P Albouy, GL Alderweireldt, S Alegria, ZL Aleksa, M Aleksandrov, IN Alexa, C Alexopoulos, T Alfonsi, F Algren, M Alhroob, M Ali, B Ali, H MJ Ali, S Alibocus, SW Aliev, M Alimonti, G Alkakhi, W Allaire, C Allbrooke, B MM Allen, JS Allen, JF Allport, PP Aloisio, A Alonso, F Alpigiani, C Alsolami, Z MK Fernandez, A Alvarez Cardoso, M Alves Alviggi, MG Aly, M Coutinho, Y Amaral Ambler, A Amelung, C Amerl, M Ames, CG Amezza, T Amidei, D Amini, B Amirie, K Amirkhanov, A Dos Santos, SP Amor Amos, KR Amperiadou, D An, S Anastopoulos, C Andeen, T Anders, JK Anderson, AC Andreazza, A Angelidakis, S Angerami, A Anisenkov, AV Annovi, A Antel, C Antipov, E Antonelli, M Anulli, F Aoki, M https://escholarship.org/uc/item/9t8677x0 We demonstrate that novel limits on prompt axionlike particles (ALPs) in the hard-to-probe mass range near the neutral pion—the so-called pion chimney—may be obtained from recasting data taken by the J-PARC KOTO experiment, to search for . We also explore the power of KOTO data to probe for a broader range of ALP masses, incorporating displaced decays. https://escholarship.org/uc/item/9t8677x0 Thu, 25 Jun 2026 00:00:00 +0000 Balkin, Reuven https://orcid.org/0000-0003-3024-9280 Gori, Stefania Robinson, Dean J Scherb, Christiane https://orcid.org/0000-0002-8146-2623 https://escholarship.org/uc/item/8w4266cj The ATLAS experiment has performed a measurement of coherent exclusive J/ψ → μ+μ− production in ultraperipheral Pb+Pb collisions at sNN=5.36$$ \sqrt{s_{\textrm{NN}}}=5.36 $$ TeV. The data was recorded at the Large Hadron Collider (LHC) during 2023, and corresponds to an integrated luminosity of 79 μb−1. Exclusive J/ψ candidates were selected with a dedicated track-sensitive trigger based on the ATLAS transition radiation tracker. The analysis involves reconstruction of the dimuon invariant mass based on muon tracks from the inner detector, as the muon transverse momentum range of interest precludes the use of the standard muon reconstruction and identification algorithms. Differential cross sections are measured as a function of J/ψ rapidity and are compared with theoretical predictions. After extrapolation to sNN=5.02$$ \sqrt{s_{\textrm{NN}}}=5.02 $$ TeV, they are also compared with previous measurements performed by other experiments using data from LHC Run 2. While the results... https://escholarship.org/uc/item/8w4266cj Thu, 25 Jun 2026 00:00:00 +0000 Aad, G Aakvaag, E Abbott, B Abdelhameed, S Abeling, K Abicht, NJ Abidi, SH Aboelela, M Aboulhorma, A Abramowicz, H Abulaiti, Y Acharya, BS Ackermann, A Adam Bourdarios, C Adamczyk, L Addepalli, SV Addison, MJ Adelman, J Adiguzel, A Adye, T Affolder, AA https://orcid.org/0000-0002-9058-7217 Afik, Y Agaras, MN Aggarwal, A Agheorghiesei, C Ahmadov, F Ahuja, S Ahuja, S Ai, X Aielli, G Aikot, A Ait Tamlihat, M Aitbenchikh, B Akbiyik, M Åkesson, TPA Akimov, AV Akiyama, D Akolkar, NN Aktas, S Alberghi, GL Albert, J Alberti, U Albicocco, P Albouy, GL Alderweireldt, S Alegria, ZL Aleksa, M Alexa, C Aleksandrov, IN Alexopoulos, T Alfonsi, F Algren, M Alhroob, M Ali, B Ali, HMJ Ali, S Alibocus, SW Aliev, M Alimonti, G Alkakhi, W Allaire, C Allbrooke, BMM Allen, DR Allen, JS Allen, JF Allport, PP Aloisio, A Alonso, F Alpigiani, C Alsolami, ZMK Alvarez Fernandez, A Alves Cardoso, M Alviggi, MG Aly, M Ambler, A Amelung, C Amerl, M Ames, CG Amezza, T Amidei, D Amini, B Amirie, K Amirkhanov, A Amor Dos Santos, SP Amos, KR Amperiadou, D An, S Anastopoulos, C Andeen, T Anders, JK Anderson, AC Andreazza, A Angelidakis, S Angerami, A Anisenkov, AV Annovi, A Antel, C Antipov, E Antonelli, M Anulli, F https://escholarship.org/uc/item/4bv7f3qf A search for final states characterised by at least one isolated high transverse-momentum photon, jets and large missing transverse momentum is presented. Such a final state might occur in gauge-mediated supersymmetric models where a pair of binos and higgsinos mix to form neutralinos, one of which decays into a photon plus a gravitino while the other decays into a Higgs boson, a Z boson or a photon, plus a gravitino. The search is performed using the full Run-2 data sample of 140 fb−1 of s=13$$ \sqrt{s}=13 $$ TeV proton-proton collisions collected by the ATLAS detector at the Large Hadron Collider. No significant excess of events is observed above the Standard Model prediction and model-dependent exclusion limits at the 95% confidence level are set. These limits are interpreted in terms of the masses of gauginos, which are excluded up to 1.2 TeV depending on their branching ratios, and on their branching ratios as a function of their mass. https://escholarship.org/uc/item/4bv7f3qf Thu, 25 Jun 2026 00:00:00 +0000 Aad, G Aakvaag, E Abbott, B Abdelhameed, S Abeling, K Abicht, NJ Abidi, SH Aboelela, M Aboulhorma, A Abramowicz, H Abulaiti, Y Acharya, BS Ackermann, A Adam Bourdarios, C Adamczyk, L Addepalli, SV Addison, MJ Adelman, J Adiguzel, A Adye, T Affolder, AA https://orcid.org/0000-0002-9058-7217 Afik, Y Agaras, MN Aggarwal, A Agheorghiesei, C Ahmadov, F Ahuja, S Ai, X Aielli, G Aikot, A Ait Tamlihat, M Aitbenchikh, B Akbiyik, M Åkesson, TPA Akimov, AV Akiyama, D Akolkar, NN Aktas, S Alberghi, GL Albert, J Alberti, U Albicocco, P Albouy, GL Alderweireldt, S Alegria, ZL Aleksa, M Alexa, C Aleksandrov, IN Alexopoulos, T Alfonsi, F Algren, M Alhroob, M Ali, B Ali, HMJ Ali, S Alibocus, SW Aliev, M Alimonti, G Alkakhi, W Allaire, C Allbrooke, BMM Allen, JS Allen, JF Allport, PP Aloisio, A Alonso, F Alpigiani, C Alsolami, ZMK Alvarez Fernandez, A Alves Cardoso, M Alviggi, MG Aly, M Ambler, A Amelung, C Amerl, M Ames, CG Amezza, T Amidei, D Amini, B Amirie, K Amirkhanov, A Amor Dos Santos, SP Amos, KR Amperiadou, D An, S Anastopoulos, C Andeen, T Anders, JK Anderson, AC Andreazza, A Angelidakis, S Angerami, A Anisenkov, AV Annovi, A Antel, C Antipov, E Antonelli, M Anulli, F Aoki, M Aoki, T https://escholarship.org/uc/item/3b15d2zv Is the usual treatment of axion dark matter as a classical field reliable? We show that the answer is subtle: the axion field could well be in a quantum state that has no complete classical description, but realistic detectors cannot tell the difference. To see this, we solve a fully quantum model of axion detection using quantum optics techniques. We show that intrinsically quantum effects are washed out by mode averaging or small amounts of noise, and significantly suppressed by the weakness of the axion coupling. Our Letter exemplifies that there should always be a classical analog for axion dark matter effects, extends to other wave (ultralight) dark-matter candidates, and gives a general method to compute the effects of exotic dark-matter states. https://escholarship.org/uc/item/3b15d2zv Thu, 25 Jun 2026 00:00:00 +0000 Bao, Yunjia Cheong, Dhong Yeon Rodd, Nicholas L https://orcid.org/0000-0003-3472-7606 Takach, Joey Wang, Lian-Tao Zhou, Kevin https://orcid.org/0000-0002-9810-3977 https://escholarship.org/uc/item/17f8n6j3 The top-quark mass is measured using top-quark decays producing an isolated lepton and J/ψ meson reconstructed in its μ+μ− decay mode. The data sample was recorded with the ATLAS detector in proton-proton collisions at a centre-of-mass energy of s=13$$ \sqrt{s}=13 $$ TeV during Run 2 of the Large Hadron Collider, corresponding to an integrated luminosity of 140 fb−1. The measurement is based on the invariant mass m(ℓμ+μ−) of the system made of the isolated lepton ℓ from the W boson decay and the non-isolated μ+μ− pair from a J/ψ decay of a b-hadron, exploiting its sensitivity to the top-quark mass. An unbinned maximum-likelihood fit to the m(ℓμ+μ−) distribution is performed to extract the top-quark mass. The top-quark mass is measured to be mtop = 172.17 ± 0.80 (stat) ± 0.81 (syst) ± 1.07 (recoil) GeV, with a total uncertainty of 1.56 GeV. The third uncertainty arises from changing the dipole parton shower gluon-recoil scheme used in top-quark decays. https://escholarship.org/uc/item/17f8n6j3 Thu, 25 Jun 2026 00:00:00 +0000 Aad, G Aakvaag, E Abbott, B Abdelhameed, S Abeling, K Abicht, NJ Abidi, SH Aboelela, M Aboulhorma, A Abramowicz, H Abulaiti, Y Acharya, BS Ackermann, A Adam Bourdarios, C Adamczyk, L Addepalli, SV Addison, MJ Adelman, J Adiguzel, A Adye, T Affolder, AA https://orcid.org/0000-0002-9058-7217 Afik, Y Agaras, MN Aggarwal, A Agheorghiesei, C Ahmadov, F Ahuja, S Ahuja, S Ai, X Aielli, G Aikot, A Ait Tamlihat, M Aitbenchikh, B Akbiyik, M Åkesson, TPA Akimov, AV Akiyama, D Akolkar, NN Aktas, S Alberghi, GL Albert, J Alberti, U Albicocco, P Albouy, GL Alderweireldt, S Alegria, ZL Aleksa, M Alexa, C Aleksandrov, IN Alexopoulos, T Alfonsi, F Algren, M Alhroob, M Ali, B Ali, HMJ Ali, S Alibocus, SW Aliev, M Alimonti, G Alkakhi, W Allaire, C Allbrooke, BMM Allen, DR Allen, JS Allen, JF Allport, PP Aloisio, A Alonso, F Alpigiani, C Alsolami, ZMK Alvarez Fernandez, A Alves Cardoso, M Alviggi, MG Aly, M Ambler, A Amelung, C Amerl, M Ames, CG Amezza, T Amidei, D Amini, B Amirie, K Amirkhanov, A Amor Dos Santos, SP Amos, KR Amperiadou, D An, S Anastopoulos, C Andeen, T Anders, JK Anderson, AC Andreazza, A Angelidakis, S Angerami, A Anisenkov, AV Annovi, A Antel, C Antipov, E Antonelli, M Anulli, F https://escholarship.org/uc/item/7d78299d One of the forthcoming major challenges in particle physics is the experimental determination of the Higgs trilinear self-coupling. While efforts have largely focused on on-shell double- and single-Higgs production in proton-proton collisions, off-shell Higgs production has also been proposed as a valuable complementary probe. In this article, we design a hybrid neural simulation-based inference (NSBI) approach to construct a likelihood of the Higgs signal incorporating modifications from the Standard Model effective field theory (SMEFT), relevant background processes, and quantum interference effects. It leverages the training efficiency of matrix-element-enhanced techniques, which are vital for robust SMEFT applications, while also incorporating the practical advantages of classification-based methods for effective background estimates. We demonstrate that our NSBI approach achieves sensitivity close to the theoretical optimum and provide expected constraints for the... https://escholarship.org/uc/item/7d78299d Wed, 24 Jun 2026 00:00:00 +0000 Ghosh, Aishik https://orcid.org/0000-0003-0819-1553 Griese, Maximilian Haisch, Ulrich Park, Tae Hyoun https://escholarship.org/uc/item/6xt8768d We present distances to 10 supernova (SN) host galaxies determined via the tip of the red giant branch using JWST/NIRCam and the F115W, F356W, and F444W bandpasses. The majority of the analysis was conducted on photometric catalogs that had their absolute zero-points randomized to mask information on distance. The new F115W TRGB distances, anchored by the geometric maser distance to NGC 4258, agree well with our previously derived Hubble Space Telescope (HST) TRGB distances, differing by only 1% on average and 4% on a per-galaxy basis. The color-corrected F115W TRGB is therefore equally precise a method of distance measurement as, and offers unique advantages over, its color-insensitive, I-band counterpart. We use these distances to update four published H0 calibrations and evaluate how different SN analyses, both within and across independent groups, yield different H0 values. For our JWST sample of 11 SNe, we find consistent values of H0 ≃ 69 km s−1 Mpc−1, with a dispersion... https://escholarship.org/uc/item/6xt8768d Tue, 23 Jun 2026 00:00:00 +0000 Hoyt, Taylor J Jang, In Sung Freedman, Wendy L Madore, Barry F Owens, Kayla A Lee, Abigail J https://escholarship.org/uc/item/2n1554pn It has recently been suggested that exotic quantum gravity effects could lead to large vacuum fluctuations, potentially observable with realistic detectors. Experiments are currently being built to search for these signals. Here we analyze the minimal model of quantum gravity at low energies—the usual effective quantum field theory of gravitons—and show that it unambiguously predicts an unobservably small variation in the measured interferometer length . In particular, there are no divergences signaling a breakdown of this calculation in the low energy regime. Thus, detection of a large, gravitationally induced length variation would signal a severe breakdown of effective quantum field theory in low energy quantum gravity. https://escholarship.org/uc/item/2n1554pn Thu, 18 Jun 2026 00:00:00 +0000 Carney, Daniel https://orcid.org/0000-0002-4269-8342 Karydas, Manthos Sivaramakrishnan, Allic https://escholarship.org/uc/item/1x7081zj We perform a multiprobe analysis combining cosmic microwave background (CMB) data from and the Atacama Cosmology Telescope (ACT), ACT CMB lensing, and large-scale structure (LSS) measurements from the Dark Energy Spectroscopic Instrument (DESI), including DESI Legacy Imaging Survey (LS) galaxies and baryon acoustic oscillations (BAOs). We present the first analysis of ACT DR6 lensing, DESI LS, and Integrated Sachs-Wolfe (ISW). Within , this yields , in good agreement with primary CMB inferences and provides a sound-horizon-free Hubble constant constraint of . Then, combining with CMB primary and BAO, we reconfirm a CMB–BAO discrepancy in the plane, which is heightened when combining BAO with the data vector. We explore two dark-energy extensions that may reconcile this: an early-time modification, early dark energy (EDE), and late-time dynamical dark energy (DDE) parametrized by . For CMB , we find a preference for DDE over , while EDE is modestly favored at .... https://escholarship.org/uc/item/1x7081zj Thu, 18 Jun 2026 00:00:00 +0000 Reeves, Alexander Ferraro, Simone https://orcid.org/0000-0003-4992-7854 Nicola, Andrina Refregier, Alexandre https://escholarship.org/uc/item/5b9092fj Due to an error in production, the error margins of many values were incorrectly published. Table 1 details the locations of the errors and their corrections. https://escholarship.org/uc/item/5b9092fj Wed, 17 Jun 2026 00:00:00 +0000 Aalbers, J Akerib, DS Al Musalhi, AK Alder, F Amarasinghe, CS Ames, A Anderson, TJ https://orcid.org/0000-0002-7113-6840 Angelides, N Araújo, HM Armstrong, JE Arthurs, M Baker, A Balashov, S Bang, J Bargemann, JW Barillier, EE Beattie, K Bhatti, A Biekert, A Biesiadzinski, TP Birch, HJ Bishop, E Blockinger, GM Boxer, B Brew, CAJ Brás, P Burdin, S Buuck, M Carmona-Benitez, MC Carter, M Chawla, A Chen, H Chin, YT Chott, NI Converse, MV Coronel, R Cottle, A Cox, G Curran, D Dahl, CE David, A Delgaudio, J Dey, S de Viveiros, L Di Felice, L Ding, C Dobson, JEY Druszkiewicz, E Dubey, S Eriksen, SR Fan, A Fearon, NM Fieldhouse, N Fiorucci, S Flaecher, H Fraser, ED Fruth, TMA Gaitskell, RJ Geffre, A Genovesi, J Ghag, C Gibbons, R Gokhale, S Green, J van der Grinten, MGD Haiston, JJ Hall, CR Han, S Hartigan-OConnor, E Haselschwardt, SJ Hernandez, MA Hertel, SA Heuermann, G Homenides, GJ Horn, M Huang, DQ Hunt, D Jacquet, E James, RS Johnson, J Kaboth, AC Kamaha, AC Kannichankandy, M Khaitan, D Khazov, A Khurana, I Kim, J Kim, YD Kingston, J Kirk, R Kodroff, D https://orcid.org/0000-0001-6095-2714 Korley, L Korolkova, EV Kraus, H Kravitz, S Kreczko, L Kudryavtsev, VA Leonard, DS Lesko, KT https://orcid.org/0000-0002-0149-5231 Levy, C https://escholarship.org/uc/item/9qs8h4b3 With the increased data volumes expected to be delivered by the HLLHC, it becomes critical for the ATLAS experiment to maximize the utilization of available computing resources ranging from conventional GRID clusters to supercomputers and cloud computing platforms. To run its data processing applications on these resources, the ATLAS software framework must be capable of efficiently executing data processing tasks in heterogeneous distributed computing environments. Today, using the Gaudi Avalanche Scheduler, whose implementation is based on Intel TBB, we can efficiently schedule Athena algorithms to multiple threads within a single compute node. We aim to develop a new framework scheduler capable of supporting distributed heterogeneous environments, based on technologies like HPX or Ray. After the initial evaluation phase of these technologies, we began the development of a prototype distributed task scheduler for the Athena framework. This contribution describes this prototype... https://escholarship.org/uc/item/9qs8h4b3 Tue, 16 Jun 2026 00:00:00 +0000 Calafiura, Paolo Esseiva, Julien https://orcid.org/0009-0002-1119-4851 Ju, Xiangyang Leggett, Charles https://orcid.org/0000-0002-9299-9020 Stanislaus, Beojan https://orcid.org/0000-0001-9007-7658 Tsulaia, Vakho https://escholarship.org/uc/item/8wq0d9kj Parton labeling methods are widely used when reconstructing collider events with top quarks or other massive particles. State-of-the-art techniques are based on machine learning and require training data with events that have been matched using simulations with truth information. In nature, there is no unique matching between partons and final state objects due to the properties of the strong force and due to acceptance effects. We propose a new approach to parton labeling that circumvents these challenges by recycling regression models. The final state objects that are most relevant for a regression model to predict the properties of a particular top quark are assigned to said parent particle without having any parton-matched training data. This approach is demonstrated using simulated events with top quarks and outperforms the widely-used χ2$$\chi ^2$$ method. https://escholarship.org/uc/item/8wq0d9kj Tue, 16 Jun 2026 00:00:00 +0000 Qiu, Shikai Han, Shuo https://orcid.org/0000-0001-8383-7348 Ju, Xiangyang Nachman, Benjamin Wang, Haichen https://escholarship.org/uc/item/7zt1t47j Machine learning (ML)-based algorithms play increasingly important roles in almost all aspects of the data analyses in ATLAS, including detector simulations, event reconstructions, and data analyses. These diverse ML models are being deployed in the ATLAS software framework, Athena. To harmonize the ML inference in both the Athena environment and the ROOT environment, a dual-use ML interface is defined and implemented with two distinct backends: the Open Neural Network Exchange (ONNX) Runtime and Inference as a Service. While ONNX Runtime serves as the primary inference backend in Athena, scalable inference strategies are required to address the growing demands of processing simulation and collision data, including maximizing event throughput and utilizing coprocessors like graphics processing units (GPUs). To meet this challenge, we introduce AthenaTriton, a solution that integrates the NVIDIA Triton Inference Server with Athena. In AthenaTriton, Athena operates as a Triton client... https://escholarship.org/uc/item/7zt1t47j Tue, 16 Jun 2026 00:00:00 +0000 Chou, Yuan-Tang Ju, Xiangyang Zhao, Haoran Krasznahorkay, Attila Elmsheuser, Johannes Gupta, Debottam Bakshi Stanislaus, Beojan https://orcid.org/0000-0001-9007-7658 Esseiva, Julien https://orcid.org/0009-0002-1119-4851 Tsulaia, Vakhtang Hsu, Shih-Chieh Calafiura, Paolo https://orcid.org/0000-0002-1692-1678 https://escholarship.org/uc/item/7m02v1rd We perform the first high-throughput search and evaluation of materials that can serve as excellent low-mass dark matter detectors. Using properties of close to 1000 materials from the Materials Project database, we project the sensitivity in dark matter parameter space for experiments constructed from each material, including both absorption and scattering processes between dark matter and electrons. Using the anisotropic materials in the dataset, we further compute the level of daily modulation in interaction rates and the resulting directional sensitivities, highlighting materials with prospects to detect the dark matter wind. Our methods provide the basic tools for the data-driven design of dark matter detectors, and our findings lay the groundwork for the next generation of highly optimized direct searches for dark matter as light as the keV scale. This represents a major step in the application of results from condensed matter physics to dark matter search design. https://escholarship.org/uc/item/7m02v1rd Tue, 16 Jun 2026 00:00:00 +0000 Griffin, Sinéad M Hochberg, Yonit Lehmann, Benjamin V Ovadia, Rotem Persson, Kristin A https://orcid.org/0000-0003-2495-5509 Suter, Bethany A Yang, Ruo Xi Zhao, Wayne https://escholarship.org/uc/item/3vk5f9nd One correction is noted for the paper. The calculation of an angle used to account for meson polarisation in the signal decays was not correct. https://escholarship.org/uc/item/3vk5f9nd Tue, 16 Jun 2026 00:00:00 +0000 Aaboud, M Aad, G Abbott, B Abdinov, O Abeloos, B Abidi, SH AbouZeid, OS Abraham, NL Abramowicz, H Abreu, H Abreu, R Abulaiti, Y Acharya, BS Adachi, S Adamczyk, L Adelman, J Adersberger, M Adye, T Affolder, AA https://orcid.org/0000-0002-9058-7217 Afik, Y Agatonovic-Jovin, T Agheorghiesei, C Aguilar-Saavedra, JA Ahlen, SP Ahmadov, F Aielli, G Akatsuka, S Akerstedt, H Åkesson, TPA Akilli, E Akimov, AV Alberghi, GL Albert, J Albicocco, P Alconada Verzini, MJ Alderweireldt, SC Aleksa, M Aleksandrov, IN Alexa, C Alexander, G Alexopoulos, T Alhroob, M Ali, B Aliev, M Alimonti, G Alison, J Alkire, SP Allbrooke, BMM Allen, BW Allport, PP Aloisio, A Alonso, A Alonso, F Alpigiani, C Alshehri, AA Alstaty, MI Alvarez Gonzalez, B Álvarez Piqueras, D Alviggi, MG Amadio, BT Amaral Coutinho, Y Amelung, C Amidei, D Amor Dos Santos, SP Amoroso, S Amundsen, G Anastopoulos, C Ancu, LS Andari, N Andeen, T Anders, CF Anders, JK Anderson, KJ Andreazza, A Andrei, V Angelidakis, S Angelozzi, I Angerami, A Anisenkov, AV Anjos, N Annovi, A Antel, C Antonelli, M Antonov, A Antrim, DJ Anulli, F Aoki, M Aperio Bella, L Arabidze, G Arai, Y Araque, JP Araujo Ferraz, V Arce, ATH Ardell, RE Arduh, FA Arguin, J-F Argyropoulos, S Arik, M Armbruster, AJ Armitage, LJ https://escholarship.org/uc/item/0vg3s40q A search is presented for massive long-lived particles in events featuring at least one displaced vertex and at least one displaced muon, using proton–proton collision data collected by the ATLAS detector at the Large Hadron Collider from 2022 to 2024 at a centre-of-mass energy of 13.6 TeV. The data sample corresponds to an integrated luminosity of 164 fb − 1 . The analysis targets scenarios in which long-lived particles decay inside the ATLAS inner detector, resulting in a topology of at least one massive, displaced vertex (DV) with multiple associated tracks, and at least one muon with a large transverse impact parameter relative to the primary interaction point. The muon is not required to be associated with the DV. Two signal regions are defined by the transverse distance of the reconstructed DV from the interaction point. Background contributions are estimated by using fully data-driven techniques. No significant excess above the expected background is observed. Upper limits... https://escholarship.org/uc/item/0vg3s40q Tue, 16 Jun 2026 00:00:00 +0000 Aad, G Aakvaag, E Abbott, B Abdelhameed, S Abeling, K Abicht, NJ Abidi, SH Aboelela, M Aboulhorma, A Abramowicz, H Acharya, BS Ackermann, A Bourdarios, C Adam Adamczyk, L Addepalli, SV Addison, MJ Adelman, J Adiguzel, A Adye, T Affolder, AA https://orcid.org/0000-0002-9058-7217 Afik, Y Agaras, MN Aggarwal, A Agheorghiesei, C Ahmad, A Ahmadov, F Ahuja, S Ahuja, S Ai, X Aielli, G Aikot, A Tamlihat, M Ait Åkesson, TPA Akiyama, D Akolkar, NN Aktas, S Alberghi, GL Albert, J Alberti, U Albicocco, P Alderweireldt, S Alegria, ZL Aleksa, M Aleksandrov, IN Alexa, C Alexopoulos, T Alfonsi, F Algren, M Alhroob, M Ali, B Ali, HMJ Ali, S Alibocus, SW Aliev, M Alimonti, G Allaire, C Allbrooke, BMM Allen, DR Allen, JS Allen, JF Alley, CS Almazan, ER Aloisio, A Alonso, F Alpigiani, C Fernandez, A Alvarez Cardoso, M Alves Alviggi, MG Aly, M Coutinho, Y Amaral Ambler, A Amelung, C Amerl, M Amezza, T Amini, B Amirie, K Amirkhanov, A Amperiadou, D An, S Anastopoulos, C Andeen, T Anders, JK Anderson, AC Andreazza, A Angelidakis, S Angerami, A Anisenkov, AV Annovi, A Antel, C Antipov, E Antonelli, M Anulli, F Aoki, M Aoki, T Aparo, MA Bella, L Aperio Apicella, M Appelt, C Apyan, A Arampatzi, M https://escholarship.org/uc/item/9590m82q A search is presented for long-lived particles decaying into an oppositely charged lepton pair, μ + μ − , e + e − , or e  ±  μ ∓, that form a vertex within the inner tracking system of the ATLAS detector at the Large Hadron Collider, displaced from the primary proton–proton interaction region. The analysis uses the 140 fb − 1 of Run-2 data collected at s = 13 TeV by the ATLAS experiment in 2015–2018. The results of the analysis are interpreted in the context of three benchmark models covering masses from 0.1 to 2.2 TeV and a range of mean proper lifetimes times the speed of light from 1 to 10 000 mm. The first model is a generic Z′ boson pair-produced by a new heavy scalar, with the Z′ decaying into lepton pairs. The remaining two models are R-parity violating supersymmetric models in which the lightest neutralino χ ˜ 1 0 decays into ℓ + ℓ ′ − ν ( ℓ , ℓ ′ = e , μ). The models differ by the mode of production of the χ ˜ 1 0 , which can be produced via the decay of pairs of gluinos... https://escholarship.org/uc/item/9590m82q Thu, 4 Jun 2026 00:00:00 +0000 Aad, G Aakvaag, E Abbott, B Abdelhameed, S Abeling, K Abicht, NJ Abidi, SH Aboelela, M Aboulhorma, A Abramowicz, H Abulaiti, Y Acharya, BS Ackermann, A Bourdarios, C Adam Adamczyk, L Addepalli, SV Addison, MJ Adelman, J Adiguzel, A Adye, T Affolder, AA https://orcid.org/0000-0002-9058-7217 Afik, Y Agaras, MN Aggarwal, A Agheorghiesei, C Ahmadov, F Ahuja, S Ai, X Aielli, G Aikot, A Tamlihat, M Ait Aitbenchikh, B Akbiyik, M Åkesson, TPA Akimov, AV Akiyama, D Akolkar, NN Aktas, S Alberghi, GL Albert, J Albicocco, P Albouy, GL Alderweireldt, S Alegria, ZL Aleksa, M Aleksandrov, IN Alexa, C Alexopoulos, T Alfonsi, F Algren, M Alhroob, M Ali, B Ali, HMJ Ali, S Alibocus, SW Aliev, M Alimonti, G Alkakhi, W Allaire, C Allbrooke, BMM Allen, JS Allen, JF Allport, PP Aloisio, A Alonso, F Alpigiani, C Alsolami, ZMK Fernandez, A Alvarez Cardoso, M Alves Alviggi, MG Aly, M Coutinho, Y Amaral Ambler, A Amelung, C Amerl, M Ames, CG Amidei, D Amini, B Amirie, K Amirkhanov, A Dos Santos, SP Amor Amos, KR Amperiadou, D An, S Ananiev, V Anastopoulos, C Andeen, T Anders, JK Anderson, AC Andreazza, A Angelidakis, S Angerami, A Anisenkov, AV Annovi, A Antel, C Antipov, E Antonelli, M Anulli, F Aoki, M Aoki, T https://escholarship.org/uc/item/9318f4d5 This Letter analyzes the sensitivity of event geometry estimators to the initial-state kinematics of hard scattering in proton–lead collisions. This analysis uses dijets as a proxy for the parton–parton scattering configuration, correlating it with event geometry estimators, namely the energy deposited in the Zero-Degree Calorimeter and the transverse energy recorded in the Forward Calorimeter in the Pb-going direction. The analysis uses data recorded by the ATLAS detector at the Large Hadron Collider with a nucleon–nucleon center-of-mass energy of 8.16 TeV, corresponding to an integrated luminosity of 56 nb − 1 . The jets are measured within the pseudorapidity interval −2.8  <  η  <  4.5, where positive η values correspond to the direction of the proton beam. Results are presented as a function of the Bjorken-x of the parton originating from the proton, xp . Both event geometry estimators are found to be dependent on xp , with the energy deposited in the Zero-Degree Calorimeter... https://escholarship.org/uc/item/9318f4d5 Thu, 4 Jun 2026 00:00:00 +0000 Aad, G Aakvaag, E Abbott, B Abdelhameed, S Abeling, K Abicht, NJ Abidi, SH Aboelela, M Aboulhorma, A Abramowicz, H Abulaiti, Y Acharya, BS Ackermann, A Bourdarios, C Adam Adamczyk, L Addepalli, SV Addison, MJ Adelman, J Adiguzel, A Adye, T Affolder, AA https://orcid.org/0000-0002-9058-7217 Afik, Y Agaras, MN Aggarwal, A Agheorghiesei, C Ahmadov, F Ahuja, S Ai, X Aielli, G Aikot, A Tamlihat, M Ait Aitbenchikh, B Akbiyik, M Åkesson, TPA Akimov, AV Akiyama, D Akolkar, NN Aktas, S Alberghi, GL Albert, J Albicocco, P Albouy, GL Alderweireldt, S Alegria, ZL Aleksa, M Aleksandrov, IN Alexa, C Alexopoulos, T Alfonsi, F Algren, M Alhroob, M Ali, B Ali, HMJ Ali, S Alibocus, SW Aliev, M Alimonti, G Alkakhi, W Allaire, C Allbrooke, BMM Allen, JS Allen, JF Allport, PP Aloisio, A Alonso, F Alpigiani, C Alsolami, ZMK Fernandez, A Alvarez Cardoso, M Alves Alviggi, MG Aly, M Coutinho, Y Amaral Ambler, A Amelung, C Amerl, M Ames, CG Amezza, T Amidei, D Amini, B Amirie, K Amirkhanov, A Dos Santos, SP Amor Amos, KR Amperiadou, D An, S Anastopoulos, C Andeen, T Anders, JK Anderson, AC Andreazza, A Angelidakis, S Angerami, A Anisenkov, AV Annovi, A Antel, C Antipov, E Antonelli, M Anulli, F Aoki, M Aoki, T https://escholarship.org/uc/item/8zh9r7fc The angular distributions of Drell–Yan lepton pairs provide sensitive probes of the underlying dynamics of quantum chromodynamics (QCD) effects in vector-boson production. This paper presents for the first time the measurement of the full set of angular coefficients together with the differential cross-section as a function of the transverse momentum of the W boson, in the full phase space of the decay leptons. The measurements are performed separately for the W-$$W^-$$ and W+$$W^+$$ channels. The analysis uses proton–proton collision data recorded by the ATLAS experiment at the Large Hadron Collider in 2017 and 2018, during special low-luminosity runs with a reduced number of interactions per bunch crossings (pile-up). The data correspond to an integrated luminosity of 338 pb-1$$^{-1}$$ at a centre-of-mass energy of s=13$$\sqrt{s} = 13$$ TeV. The low pile-up environment provides excellent experimental conditions for high-precision measurements of W-boson production.... https://escholarship.org/uc/item/8zh9r7fc Thu, 4 Jun 2026 00:00:00 +0000 Aad, G Aakvaag, E Abbott, B Abdelhameed, S Abeling, K Abicht, NJ Abidi, SH Aboelela, M Aboulhorma, A Abramowicz, H Abulaiti, Y Acharya, BS Ackermann, A Bourdarios, C Adam Adamczyk, L Addepalli, SV Addison, MJ Adelman, J Adiguzel, A Adye, T Affolder, AA https://orcid.org/0000-0002-9058-7217 Afik, Y Agaras, MN Aggarwal, A Agheorghiesei, C Ahmadov, F Ahuja, S Ahuja, S Ai, X Aielli, G Aikot, A Tamlihat, M Ait Aitbenchikh, B Akbiyik, M Åkesson, TPA Akimov, AV Akiyama, D Akolkar, NN Aktas, S Alberghi, GL Albert, J Alberti, U Albicocco, P Albouy, GL Alderweireldt, S Alegria, ZL Aleksa, M Aleksandrov, IN Alexa, C Alexopoulos, T Alfonsi, F Algren, M Alhroob, M Ali, B Ali, HMJ Ali, S Alibocus, SW Aliev, M Alimonti, G Alkakhi, W Allaire, C Allbrooke, BMM Allen, DR Allen, JS Allen, JF Allport, PP Aloisio, A Alonso, F Alpigiani, C Alsolami, ZMK Fernandez, A Alvarez Cardoso, M Alves Alviggi, MG Aly, M Coutinho, Y Amaral Ambler, A Amelung, C Amerl, M Ames, CG Amezza, T Amidei, D Amini, B Amirie, K Amirkhanov, A Santos, SP Amor Dos Amos, KR Amperiadou, D An, S Anastopoulos, C Andeen, T Anders, JK Anderson, AC Andreazza, A Angelidakis, S Angerami, A Anisenkov, AV Annovi, A Antel, C Antipov, E Antonelli, M https://escholarship.org/uc/item/7jx4n13j A search for the Higgs boson decay to a Z boson and a photon in the ℓℓγ ( ℓ = e , μ ) final state is performed using pp collisions at s = 13.6 TeV recorded with the ATLAS detector at the Large Hadron Collider during 2022–2024, corresponding to an integrated luminosity of 165 fb − 1 . The signal yield, normalised to the Standard Model prediction, is measured to be μ = 0 . 9 − 0.6 + 0.7 , compatible with the expected value of μ = 1.0 ± 0.7 . This corresponds to an observed (expected) signal significance of 1.4 (1.5) standard deviations under the background-only hypothesis. This result is combined with that of a similar search performed with 140 fb − 1 of s = 13 TeV pp collisions to provide the best expected sensitivity to date to this rare decay, namely an observed (expected) signal strength of μ = 1 . 3 − 0.5 + 0.6 ( μ = 1 . 0 − 0.5 + 0.6 ), corresponding to an observed (expected) significance of 2.5 (1.9) standard deviations. The measurement is consistent with the Standard Model... https://escholarship.org/uc/item/7jx4n13j Thu, 4 Jun 2026 00:00:00 +0000 Aad, G Aakvaag, E Abbott, B Abdelhameed, S Abeling, K Abicht, NJ Abidi, SH Aboelela, M Aboulhorma, A Abramowicz, H Abulaiti, Y Acharya, BS Ackermann, A Bourdarios, C Adam Adamczyk, L Addepalli, SV Addison, MJ Adelman, J Adiguzel, A Adye, T Affolder, AA https://orcid.org/0000-0002-9058-7217 Afik, Y Agaras, MN Aggarwal, A Agheorghiesei, C Ahmadov, F Ahuja, S Ai, X Aielli, G Aikot, A Tamlihat, M Ait Aitbenchikh, B Akbiyik, M Åkesson, TPA Akimov, AV Akiyama, D Akolkar, NN Aktas, S Alberghi, GL Albert, J Alberti, U Albicocco, P Albouy, GL Alderweireldt, S Alegria, ZL Aleksa, M Aleksandrov, IN Alexa, C Alexopoulos, T Alfonsi, F Algren, M Alhroob, M Ali, B Ali, HMJ Ali, S Alibocus, SW Aliev, M Alimonti, G Alkakhi, W Allaire, C Allbrooke, BMM Allen, JS Allen, JF Allport, PP Aloisio, A Alonso, F Alpigiani, C Alsolami, ZMK Fernandez, A Alvarez Cardoso, M Alves Alviggi, MG Aly, M Coutinho, Y Amaral Ambler, A Amelung, C Amerl, M Ames, CG Amezza, T Amidei, D Amini, B Amirie, K Amirkhanov, A Dos Santos, SP Amor Amos, KR Amperiadou, D An, S Anastopoulos, C Andeen, T Anders, JK Anderson, AC Andreazza, A Angelidakis, S Angerami, A Anisenkov, AV Annovi, A Antel, C Antipov, E Antonelli, M Anulli, F Aoki, M https://escholarship.org/uc/item/3pz3r1sh A measurement of the associated production of a top-quark pair with the Higgs boson (tt¯H$$ t\overline{t}H $$) in multilepton final states is presented. The analysis is based on a data sample of proton-proton collisions at s=13$$ \sqrt{s}=13 $$ TeV recorded with the ATLAS detector at the CERN Large Hadron Collider and corresponding to an integrated luminosity of 140 fb−1. Six final states defined by the number and flavour of reconstructed charged leptons are combined in a simultaneous likelihood fit to extract the tt¯H$$ t\overline{t}H $$ signal and constrain the most relevant backgrounds. The measured tt¯H$$ t\overline{t}H $$ cross-section normalised to Standard Model (SM) prediction is σtt¯H/σSM=0.63−0.19+0.20$$ {\sigma}_{t\overline{t}H}/{\sigma}^{\mathrm{SM}}=0.{63}_{-0.19}^{+0.20} $$. This result corresponds to an observed (expected) significance of 3.3σ (5.3σ). Additionally, two other fits are used to measure the tt¯H$$ t\overline{t}H $$ cross-section differentially in bins... https://escholarship.org/uc/item/3pz3r1sh Thu, 4 Jun 2026 00:00:00 +0000 Aad, G Aakvaag, E Abbott, B Abdelhameed, S Abeling, K Abicht, NJ Abidi, SH Aboelela, M Aboulhorma, A Abramowicz, H Acharya, BS Ackermann, A Adam Bourdarios, C Adamczyk, L Addepalli, SV Addison, MJ Adelman, J Adiguzel, A Adye, T Affolder, AA https://orcid.org/0000-0002-9058-7217 Afik, Y Agaras, MN Aggarwal, A Agheorghiesei, C Ahmadov, F Ahuja, S Ahuja, S Ai, X Aielli, G Aikot, A Ait Tamlihat, M Aitbenchikh, B Åkesson, TPA Akiyama, D Akolkar, NN Aktas, S Alberghi, GL Albert, J Alberti, U Albicocco, P Albouy, GL Alderweireldt, S Alegria, ZL Aleksa, M Alexa, C Aleksandrov, IN Alexopoulos, T Alfonsi, F Algren, M Alhroob, M Ali, B Ali, HMJ Ali, S Alibocus, SW Aliev, M Alimonti, G Alkakhi, W Allaire, C Allbrooke, BMM Allen, DR Allen, JS Allen, JF Aloisio, A Alonso, F Alpigiani, C Alsolami, ZMK Alvarez Fernandez, A Alves Cardoso, M Alviggi, MG Aly, M Ambler, A Amelung, C Amerl, M Ames, CG Amezza, T Amini, B Amirie, K Amirkhanov, A Amor Dos Santos, SP Amperiadou, D An, S Anastopoulos, C Andeen, T Anders, JK Anderson, AC Andreazza, A Angelidakis, S Angerami, A Anisenkov, AV Annovi, A Antel, C Antipov, E Antonelli, M Anulli, F Aoki, M Aoki, T Aparo, MA Aperio Bella, L Apicella, M Appelt, C https://escholarship.org/uc/item/2tr5f798 This paper reports the observation of electroweak diboson (WW/WZ/ZZ) production in association with a high-mass dijet system, in which final states with one boson decaying leptonically and the other boson decaying hadronically are studied. The hadronically decaying W/Z boson is reconstructed as either two small-radius jets or one large-radius jet with jet substructure requirements. The data analyzed correspond to an integrated luminosity of 140fb-1$$140 \ \text {fb}^{-1}$$ of proton–proton collisions at a center-of-mass energy of s=13$$\sqrt{s}=13$$ TeV collected with the ATLAS detector during the 2015-2018 data taking at the Large Hadron Collider. The electroweak production of WW/WZ/ZZ in association with two jets is observed in a phase space dominated by vector-boson scattering with a significance of 7.4σ$$7.4\sigma $$ (expected 6.1σ$$6.1\sigma $$) and the signal strength is determined to be 1.28-0.21+0.23$$1.28^{+0.23}_{-0.21}$$. The corresponding production cross section in... https://escholarship.org/uc/item/2tr5f798 Thu, 4 Jun 2026 00:00:00 +0000 Aad, G Aakvaag, E Abbott, B Abdelhameed, S Abeling, K Abicht, NJ Abidi, SH Aboelela, M Aboulhorma, A Abramowicz, H Abulaiti, Y Acharya, BS Ackermann, A Bourdarios, C Adam Adamczyk, L Addepalli, SV Addison, MJ Adelman, J Adiguzel, A Adye, T Affolder, AA https://orcid.org/0000-0002-9058-7217 Afik, Y Agaras, MN Aggarwal, A Agheorghiesei, C Ahmadov, F Ahuja, S Ai, X Aielli, G Aikot, A Tamlihat, M Ait Aitbenchikh, B Akbiyik, M Åkesson, TPA Akimov, AV Akiyama, D Akolkar, NN Aktas, S Alberghi, GL Albert, J Albicocco, P Albouy, GL Alderweireldt, S Alegria, ZL Aleksa, M Aleksandrov, IN Alexa, C Alexopoulos, T Alfonsi, F Algren, M Alhroob, M Ali, B Ali, HMJ Ali, S Alibocus, SW Aliev, M Alimonti, G Alkakhi, W Allaire, C Allbrooke, BMM Allen, JS Allen, JF Allport, PP Aloisio, A Alonso, F Alpigiani, C Alsolami, ZMK Fernandez, A Alvarez Cardoso, M Alves Alviggi, MG Aly, M Coutinho, Y Amaral Ambler, A Amelung, C Amerl, M Ames, CG Amezza, T Amidei, D Amini, B Amirie, K Amirkhanov, A Santos, SP Amor Dos Amos, KR Amperiadou, D An, S Anastopoulos, C Andeen, T Anders, JK Anderson, AC Andreazza, A Angelidakis, S Angerami, A Anisenkov, AV Annovi, A Antel, C Antipov, E Antonelli, M Anulli, F Aoki, M Aoki, T https://escholarship.org/uc/item/1m0886ws The production of single top quarks and top antiquarks via the t-channel exchange of a virtual W boson is measured in proton-proton collisions at a centre-of-mass energy of 13 TeV at the Large Hadron Collider. The full Run 2 data sample recorded with the ATLAS detector in the years 2015–2018 is used, corresponding to an integrated luminosity of 140 fb−1. The absolute and normalised production cross-sections are measured differentially as a function of the transverse momentum and absolute rapidity of the top quark and top antiquark. In addition, the ratio of top quark to top antiquark production cross-sections is measured. The measured distributions are compared with next-to-leading-order quantum chromodynamics predictions obtained with different combinations of matrix-element generators, parton-shower programs and proton parton distribution functions, as well as to next-to-next-to-leading-order calculations. Overall, good agreement is observed between the measurements and the... https://escholarship.org/uc/item/1m0886ws Thu, 4 Jun 2026 00:00:00 +0000 Aad, G Aakvaag, E Abbott, B Abdelhameed, S Abeling, K Abicht, NJ Abidi, SH Aboelela, M Aboulhorma, A Abramowicz, H Abulaiti, Y Acharya, BS Ackermann, A Adam Bourdarios, C Adamczyk, L Addepalli, SV Addison, MJ Adelman, J Adiguzel, A Adye, T Affolder, AA https://orcid.org/0000-0002-9058-7217 Afik, Y Agaras, MN Aggarwal, A Agheorghiesei, C Ahmadov, F Ahuja, S Ahuja, S Ai, X Aielli, G Aikot, A Ait Tamlihat, M Aitbenchikh, B Åkesson, TPA Akimov, AV Akiyama, D Akolkar, NN Aktas, S Alberghi, GL Albert, J Alberti, U Albicocco, P Albouy, GL Alderweireldt, S Alegria, ZL Aleksa, M Alexa, C Aleksandrov, IN Alexopoulos, T Alfonsi, F Algren, M Alhroob, M Ali, B Ali, HMJ Ali, S Alibocus, SW Aliev, M Alimonti, G Alkakhi, W Allaire, C Allbrooke, BMM Allen, DR Allen, JS Allen, JF Allport, PP Aloisio, A Alonso, F Alpigiani, C Alsolami, ZMK Alvarez Fernandez, A Alves Cardoso, M Alviggi, MG Aly, M Ambler, A Amelung, C Amerl, M Ames, CG Amezza, T Amidei, D Amini, B Amirie, K Amirkhanov, A Amor Dos Santos, SP Amos, KR Amperiadou, D An, S Anastopoulos, C Andeen, T Anders, JK Anderson, AC Andreazza, A Angelidakis, S Angerami, A Anisenkov, AV Annovi, A Antel, C Antipov, E Antonelli, M Anulli, F Aoki, M https://escholarship.org/uc/item/1d54z52n The inclusive top quark pair (tt¯$$t\bar{t}$$) cross-section σtt¯$$\sigma _{t\bar{t}}$$ has been measured in proton–proton collisions at s=13TeV$$\sqrt{s}=13\,\text {TeV}$$, using 140fb-1$$140\,{\text {fb}^{-1}} $$ of data collected by the ATLAS experiment at the Large Hadron Collider. Using events with an opposite-charge eμ$$e\mu $$ pair and b-tagged jets, the cross-section is measured to be: σtt¯=829.3±1.3(stat)±8.0(syst)±7.3(lumi)±1.9(beam)pb,$$\begin{aligned} \sigma _{t\bar{t}} & = 829.3\pm 1.3\,\mathrm {(stat)}\ \pm 8.0\,\mathrm {(syst)}\ \pm 7.3\,\mathrm {(lumi)}\ \\ & \quad \pm 1.9\,\mathrm {(beam)}\,\textrm{pb}, \end{aligned}$$where the uncertainties reflect the limited size of the data sample, experimental and theoretical systematic effects, the integrated luminosity, and the proton beam energy, giving a total uncertainty of 1.3%. The result is used to determine the top quark pole mass via the dependence of the predicted cross-section on mtpole$${m_{t}^\textrm{pole}}$$,... https://escholarship.org/uc/item/1d54z52n Thu, 4 Jun 2026 00:00:00 +0000 Aad, G Aakvaag, E Abbott, B Abdelhameed, S Abeling, K Abicht, NJ Abidi, SH Aboelela, M Aboulhorma, A Abramowicz, H Abulaiti, Y Acharya, BS Ackermann, A Bourdarios, C Adam Adamczyk, L Addepalli, SV Addison, MJ Adelman, J Adiguzel, A Adye, T Affolder, AA https://orcid.org/0000-0002-9058-7217 Afik, Y Agaras, MN Aggarwal, A Agheorghiesei, C Ahmadov, F Ahuja, S Ahuja, S Ai, X Aielli, G Aikot, A Tamlihat, M Ait Aitbenchikh, B Åkesson, TPA Akimov, AV Akiyama, D Akolkar, NN Aktas, S Alberghi, GL Albert, J Alberti, U Albicocco, P Albouy, GL Alderweireldt, S Alegria, ZL Aleksa, M Aleksandrov, IN Alexa, C Alexopoulos, T Alfonsi, F Algren, M Alhroob, M Ali, B Ali, HMJ Ali, S Alibocus, SW Aliev, M Alimonti, G Alkakhi, W Allaire, C Allbrooke, BMM Allen, DR Allen, JS Allen, JF Allport, PP Aloisio, A Alonso, F Alpigiani, C Alsolami, ZMK Fernandez, A Alvarez Cardoso, M Alves Alviggi, MG Aly, M Coutinho, Y Amaral Ambler, A Amelung, C Amerl, M Ames, CG Amezza, T Amidei, D Amini, B Amirie, K Amirkhanov, A Dos Santos, SP Amor Amos, KR Amperiadou, D An, S Anastopoulos, C Andeen, T Anders, JK Anderson, AC Andreazza, A Angelidakis, S Angerami, A Anisenkov, AV Annovi, A Antel, C Antipov, E Antonelli, M Anulli, F https://escholarship.org/uc/item/0158h3rb A search for the resonant production of a heavy scalar X decaying into a lighter scalar S and a Higgs boson, through the process X → S ( → b b ¯ ) H ( → γ γ ) , where the two photons are consistent with the Higgs boson decay, is performed. The search is conducted using integrated luminosities of 140 and 59 fb − 1 of proton–proton collision data at centre-of-mass energies of 13 and 13.6 TeV, respectively, recorded with the ATLAS detector at the LHC. The search is performed over the mass ranges of 170  ≤  mX  ≤  1000 GeV and 15  ≤  mS  ≤  500 GeV. No significant excess over the Standard Model background predictions is observed and limits at 95% confidence level are set on the product of cross section and branching fraction for the process X → S ( → b b ¯ ) H ( → γ γ ) at 13 TeV, ranging from 9 fb to 0.06 fb. https://escholarship.org/uc/item/0158h3rb Thu, 4 Jun 2026 00:00:00 +0000 Aad, G Aakvaag, E Abbott, B Abdelhameed, S Abeling, K Abicht, NJ Abidi, SH Aboelela, M Aboulhorma, A Abramowicz, H Abulaiti, Y Acharya, BS Ackermann, A Bourdarios, C Adam Adamczyk, L Addepalli, SV Addison, MJ Adelman, J Adiguzel, A Adye, T Affolder, AA https://orcid.org/0000-0002-9058-7217 Afik, Y Agaras, MN Aggarwal, A Agheorghiesei, C Ahmadov, F Ahuja, S Ai, X Aielli, G Aikot, A Tamlihat, M Ait Aitbenchikh, B Akbiyik, M Åkesson, TPA Akimov, AV Akiyama, D Akolkar, NN Aktas, S Alberghi, GL Albert, J Alberti, U Albicocco, P Albouy, GL Alderweireldt, S Alegria, ZL Aleksa, M Aleksandrov, IN Alexa, C Alexopoulos, T Alfonsi, F Algren, M Alhroob, M Ali, B Ali, HMJ Ali, S Alibocus, SW Aliev, M Alimonti, G Alkakhi, W Allaire, C Allbrooke, BMM Allen, JS Allen, JF Allport, PP Aloisio, A Alonso, F Alpigiani, C Alsolami, ZMK Fernandez, A Alvarez Cardoso, M Alves Alviggi, MG Aly, M Coutinho, Y Amaral Ambler, A Amelung, C Amerl, M Ames, CG Amezza, T Amidei, D Amini, B Amirie, K Amirkhanov, A Dos Santos, SP Amor Amos, KR Amperiadou, D An, S Anastopoulos, C Andeen, T Anders, JK Anderson, AC Andreazza, A Angelidakis, S Angerami, A Anisenkov, AV Annovi, A Antel, C Antipov, E Antonelli, M Anulli, F Aoki, M https://escholarship.org/uc/item/86w380qt Volume 1 of the FCC Feasibility Report presents an overview of the physics case, experimental programme, and detector concepts for the Future Circular Collider (FCC). This volume outlines how FCC would address some of the most profound open questions in particle physics, from precision studies of the Higgs and EW bosons and of the top quark, to the exploration of physics beyond the Standard Model. The report reviews the experimental opportunities offered by the staged implementation of FCC, beginning with an electron-positron collider (FCC-ee), operating at several centre-of-mass energies, followed by a hadron collider (FCC-hh). Benchmark examples are given of the expected physics performance, in terms of precision and sensitivity to new phenomena, of each collider stage. Detector requirements and conceptual designs for FCC-ee experiments are discussed, as are the specific demands that the physics programme imposes on the accelerator in the domains of the calibration of the collision... https://escholarship.org/uc/item/86w380qt Wed, 3 Jun 2026 00:00:00 +0000 Benedikt, M Zimmermann, F Auchmann, B Bartmann, W Burnet, JP Carli, C Chancé, A Craievich, P Giovannozzi, M Grojean, C Gutleber, J Hanke, K Henriques, André Janot, P Lourenço, C Mangano, M Otto, T Poole, J Rajagopalan, S Raubenheimer, T Todesco, E Ulrici, L Watson, T Wilkinson, G Azzi, P Bernardi, G Blondel, A Boscolo, M d’Enterria, D Dam, M de Blas, J Francois, B Freitas, A Ganis, G Keintzel, J Klute, M McCullough, M Monni, PF Palla, F Perez, E Pleier, M-A Riegler, W Sefkow, F Selvaggi, M Abada, A Abbrescia, M Abdolmaleki, H Abidi, SH Abramov, A Adam, C Ady, M Adz̆ić, PR Agapov, I Aguglia, D Ahmed, I Aiba, M Aielli, G Akan, T Akchurin, N Akturk, D Al-Thakeel, M Alberghi, GL Maestre, J Alcaraz Aleksa, M Aleksan, R Alharthi, F Alimena, J Alimenti, A Alioli, S Alix, L Allanach, BC Allwicher, L Altintas, AA Altınlı, M Alviggi, M Ambrosio, G Amhis, Y Amiri, A Ammirabile, G Andeen, T André, KDJ Andrea, J Andreazza, A Andreini, M Andriollo, T Angel, L Angelucci, M Antusch, S Anwar, MN Apolinário, L Apollinari, G Appleby, RB Apresyan, A Apyan, Aram Apyan, Armen Arbey, A Argiento, B Ari, V Arias, S Alonso, B Arias https://escholarship.org/uc/item/4b81v8tf A measurement of the inclusive production cross section of isolated prompt photons in proton-antiproton collisions at center-of-mass energy s=1.96 TeV is presented. The results are obtained using the full Run II data sample collected with the Collider Detector at the Fermilab Tevatron, which corresponds to an integrated luminosity of 9.5 fb-1. The cross section is measured as a function of photon transverse energy, ETγ, in the range 30 https://escholarship.org/uc/item/4b81v8tf Wed, 3 Jun 2026 00:00:00 +0000 Aaltonen, T Albrow, MG Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Apollinari, G Appel, JA Arisawa, T Artikov, A Asaadi, J Ashmanskas, W Auerbach, B Aurisano, A Azfar, F Badgett, W Bae, T Barbaro-Galtieri, A Barnes, VE Barnett, BA Barria, P Bartos, P Bauce, M Bedeschi, F Behari, S Bellettini, G Bellinger, J Benjamin, D Beretvas, A Bhatti, A Bland, KR Blumenfeld, B Bocci, A Bodek, A Bortoletto, D Boudreau, J Boveia, A Brigliadori, L Bromberg, C Brucken, E Budagov, J Budd, HS Burkett, K Busetto, G Bussey, P Butti, P Buzatu, A Calamba, A Camarda, S Campanelli, M Canelli, F Carls, B Carlsmith, D Carosi, R Carrillo, S Casal, B Casarsa, M Castro, A Catastini, P Cauz, D Cavaliere, V Cerri, A Cerrito, L Chen, YC Chertok, M https://orcid.org/0000-0002-2729-6273 Chiarelli, G Chlachidze, G Cho, K Chokheli, D Clark, A Clarke, C Convery, ME Conway, J Corbo, M Cordelli, M Cox, CA Cox, DJ Cremonesi, M Cruz, D Cuevas, J Culbertson, R d’Ascenzo, N Datta, M de Barbaro, P Demortier, L Deninno, M D’Errico, M Devoto, F Di Canto, A Di Ruzza, B Dittmann, JR Donati, S D’Onofrio, M Dorigo, M Driutti, A Ebina, K Edgar, R Erbacher, R Errede, S https://escholarship.org/uc/item/2mw7551c Empowering Minds: Exploring the Impact of the Contemporary Physics Education Project https://escholarship.org/uc/item/2mw7551c Wed, 3 Jun 2026 00:00:00 +0000 Barnett, R Michael https://orcid.org/0000-0002-7210-9887 Harper, Cheryl Melnik, Glen Norris, Peggy https://escholarship.org/uc/item/2km9t4wr We present two approaches for “painting” baryonic properties relevant to the Sunyaev-Zel’dovich (SZ) effect—optical depth and Compton-y—onto three-dimensional N-body simulations, using the MillenniumTNG suite as a benchmark. The goal of these methods is to produce fast and accurate reconstruction methods to aid future analyses of baryonic feedback using the SZ effect. The first approach employs a Gaussian process emulator to model the SZ quantities via a transfer function, while the second utilizes hybrid effective field theory (HEFT) to reproduce these quantities within the simulation. Our analysis involves comparing both methods to the true MillenniumTNG optical depth and Compton-y fields using several metrics, including the cross-correlation coefficient, power spectrum, and power spectrum error. Additionally, we assess how well the reconstructed fields correlate with dark matter haloes across various mass thresholds. The results indicate that the transfer function method yields... https://escholarship.org/uc/item/2km9t4wr Wed, 27 May 2026 00:00:00 +0000 Liu, R Henry Hadzhiyska, Boryana Ferraro, Simone https://orcid.org/0000-0003-4992-7854 Bose, Sownak Hernández-Aguayo, César https://escholarship.org/uc/item/1kc9018z In this paper we review the physics opportunities at linear e+e−$$\mathrm{e}^{+}\mathrm{e}^{-} $$ colliders with a special focus on high centre-of-mass energies and beam polarisation, take a fresh look at the various accelerator technologies available or under development and, for the first time, discuss how a facility first equipped with a technology that is mature today could be upgraded with technologies of tomorrow to reach much higher energies and/or luminosities. In addition, we discuss detectors, alternative collider modes, as well as opportunities for beyond-collider experiments and R&D facilities as part of a linear collider facility (LCF). The material of this paper supports all plans for e+e−$$\mathrm{e}^{+}\mathrm{e}^{-} $$ linear colliders and the additional opportunities they offer, independently of technology choice or proposed site, as well as R&D for advanced accelerator technologies. This joint perspective on the physics goals, early technologies and... https://escholarship.org/uc/item/1kc9018z Thu, 21 May 2026 00:00:00 +0000 Abramowicz, H Adli, E Alharthi, F Almanza-Soto, M Altakach, MM Altmannshofer, W Ampudia Castelazo, S Angal-Kalinin, D Anguiano, J Appleby, RB Apsimon, O Arbey, A Arco, F Arquero, O Aryshev, A Asai, S Attié, D Avila-Jimenez, JL Baer, H Bagger, JA Bai, Y Bailey, IR Balazs, C Bambade, P Barklow, T Baudot, J Bechtle, P Behnke, T Bellerive, AB Belomestnykh, S Benhammou, Y Berenguer-Antequera, J Berger, M Berggren, M Bertucci, M Besançon, M Bett, D Bhat, P-C Biekötter, T Bilanishvili, S Bilki, B Bilki, B Bjelland, VM Björklund Svensson, J Blanch, C de Blas, J Bliewert, B Boehler, M Boogert, S Boronat, M Boudry, V Bourilkov, D Bozovic, I Braathen, J Brau, JE Breuning, C Brient, J-C Brock, I Brudnowski, B Buesser, K Bulyak, E Burrows, PN Burt, G Cakir, O Caldwell, A Canbay, AC Celiberto, FG Cenni, E Chaikovska, I Chehab, R Chen, JBB Chen, G Chikamatsu, T Cilento, V Colas, P Coman, M Del Core, E Corner, L Cornet, F Cornet-Gomez, F Corriveau, F Corsini, R Cvach, J Damerell, C D’Arcy, R Das, A Dasu, S Demarteau, M Denizli, H Dermisek, R Dhar, A Dittmaier, S Djurabekova, F Donegani, EM Doyle, A Drobniak, P Dudar, B Duran Yildiz, H Durieux, G Dutta, J https://escholarship.org/uc/item/0k30q5vb POLAR II. Modeling the star formation history of galaxies on the 21 cm signal from the Epoch of Reionization https://escholarship.org/uc/item/0k30q5vb Thu, 21 May 2026 00:00:00 +0000 Ma, Qing-Bo Ghara, Raghunath Ciardi, Benedetta Acharya, Anshuman Yue, Bin Iliev, Ilian T Koopmans, Leon VE Mellema, Garrelt Zaroubi, Saleem https://escholarship.org/uc/item/1g79m654 The large-scale structure of the Universe and its evolution encapsulate a wealth of cosmological information. A powerful means of unlocking this knowledge lies in measuring the auto-power spectrum and/or the cross-power spectrum of the galaxy density and momentum fields, followed by the estimation of cosmological parameters based on these spectrum measurements. In this study, we generalize the cross-power spectrum model to accommodate scenarios in which the density and momentum fields are derived from distinct galaxy surveys. The growth rate of the large-scale structures of the Universe, commonly represented as fσ 8 , was extracted by jointly fitting the monopole and quadrupole moments of the auto-density power spectrum, the monopole of the auto-momentum power spectrum, and the dipole of the cross-power spectrum. Our estimators, theoretical models, and parameter-fitting framework were tested using mocks, confirming their robustness and accuracy in retrieving the fiducial growth... https://escholarship.org/uc/item/1g79m654 Thu, 14 May 2026 00:00:00 +0000 Qin, F Blake, C Howlett, C Turner, RJ Lodha, K Bautista, J Lai, Y Amsellem, AJ Aguilar, J Ahlen, S Bianchi, D Brooks, D BenZvi, S Carr, A Chaussidon, E Claybaugh, T Cuceu, A de la Macorra, A Douglass, K Doel, P Ferraro, S https://orcid.org/0000-0003-4992-7854 Font-Ribera, A Forero-Romero, JE Gaztañaga, E Gontcho, S Gontcho A Gutierrez, G Guy, J https://orcid.org/0000-0001-9822-6793 Herrera-Alcantar, HK Honscheid, K Huterer, D Ishak, M Joyce, R Kim, AG https://orcid.org/0000-0001-6315-8743 Kirkby, D https://orcid.org/0000-0002-8828-5463 Kisner, T Kremin, A https://orcid.org/0000-0003-0667-5941 Lahav, O Lamman, C Landriau, M Le Guillou, L Levi, ME https://orcid.org/0000-0003-1887-1018 Manera, M Meisner, A Miquel, R Moustakas, J Muñoz-Gutiérrez, A Nadathur, S Palanque-Delabrouille, N Percival, WJ Poppett, C Prada, F Pérez-Ràfols, I Ross, C Rossi, G Sanchez, E Schlegel, D https://orcid.org/0000-0002-5042-5088 Said, K Schubnell, M Seo, H Silber, J https://orcid.org/0000-0002-3461-0320 Sprayberry, D Tarlé, G Weaver, BA Zarrouk, P Zhou, R Zou, H https://escholarship.org/uc/item/8dc5c0s4 This paper presents the first measurements of the azimuthal anisotropy coefficients , which quantify the -order Fourier modulation of charged-particle azimuthal distributions, for in and collisions recorded with the ATLAS detector at the CERN Large Hadron Collider in 2025. The coefficients are measured as a function of transverse momentum ( ), collision centrality, and event multiplicity. They are extracted using two complementary methods: two-particle correlations with a template-fit subtraction of short-range nonflow contributions, and four-particle subevent cumulants, which intrinsically suppress nonflow effects and provide sensitivity to flow fluctuations. The results show a clear hierarchy and a nonmonotonic dependence on , reaching a maximum around , consistent with trends observed in heavy-ion collisions. Detailed comparisons between the two collision systems reveal an enhanced in central collisions, consistent with theory expectations based on the predicted... https://escholarship.org/uc/item/8dc5c0s4 Tue, 5 May 2026 00:00:00 +0000 Aad, G Aakvaag, E Abbott, B Abdelhameed, S Abeling, K Abicht, NJ Abidi, SH Aboelela, M Aboulhorma, A Abramowicz, H Abulaiti, Y Acharya, BS Ackermann, A Bourdarios, C Adam Adamczyk, L Addepalli, SV Addison, MJ Adelman, J Adiguzel, A Adye, T Affolder, AA https://orcid.org/0000-0002-9058-7217 Afik, Y Agaras, MN Aggarwal, A Agheorghiesei, C Ahmadov, F Ahuja, S Ahuja, S Ai, X Aielli, G Aikot, A Tamlihat, M Ait Aitbenchikh, B Åkesson, TPA Akimov, AV Akiyama, D Akolkar, NN Aktas, S Alberghi, GL Albert, J Alberti, U Albicocco, P Albouy, GL Alderweireldt, S Alegria, ZL Aleksa, M Aleksandrov, IN Alexa, C Alexopoulos, T Alfonsi, F Algren, M Alhroob, M Ali, B Ali, HMJ Ali, S Alibocus, SW Aliev, M Alimonti, G Alkakhi, W Allaire, C Allbrooke, BMM Allen, DR Allen, JS Allen, JF Allport, PP Aloisio, A Alonso, F Alpigiani, C Alsolami, ZMK Fernandez, A Alvarez Cardoso, M Alves Alviggi, MG Aly, M Coutinho, Y Amaral Ambler, A Amelung, C Amerl, M Ames, CG Amezza, T Amidei, D Amini, B Amirie, K Amirkhanov, A Dos Santos, SP Amor Amos, KR Amperiadou, D An, S Anastopoulos, C Andeen, T Anders, JK Anderson, AC Andreazza, A Angelidakis, S Angerami, A Anisenkov, AV Annovi, A Antel, C Antipov, E Antonelli, M Anulli, F https://escholarship.org/uc/item/8cq8099f We present updated forecasts for the scientific performance of the degree-scale (0.5 deg FWHM at 93 GHz), deep-field survey to be conducted by the Simons Observatory (SO). By 2027, the SO Small Aperture Telescope (SAT) complement will be doubled from three to six telescopes, including a doubling of the detector count in the 93 GHz and 145 GHz channels to 48,160 detectors. Combined with a planned extension of the survey duration to 2035, this expansion will significantly enhance SO's search for a B-mode signal in the polarisation of the cosmic microwave background, a potential signature of gravitational waves produced in the very early Universe. Assuming a 1/f noise model with knee multipole ℓknee = 50 and a moderately complex model for Galactic foregrounds, we forecast a 1σ (or 68% confidence level) constraint on the tensor-to-scalar ratio r of σr = 1.2 × 10-3, assuming no primordial B-modes are present. This forecast assumes that 70% of the B-mode lensing signal can ultimately... https://escholarship.org/uc/item/8cq8099f Tue, 5 May 2026 00:00:00 +0000 Abril-Cabezas, I Adachi, S Ade, P Adler, AE https://orcid.org/0000-0002-5736-5524 Agrawal, P Aguirre, J Aiola, S Alford, T Ali, A Alonso, D Alvarez, MA An, R Aravena, M Arnold, K Ashton, P Astori, F Atkins, Z Austermann, J Azzoni, S Baccigalupi, C Baker, D Balafendiev, R Lizancos, A Baleato Barron, D Barry, P Bartlett, J Basyrov, A Battaglia, N Battistelli, ES Battye, R Bayer, A Bazarko, A Beall, JA Bean, R Beck, D Beckman, S Begin, J Beheshti, A Beringue, B Bhandarkar, T Bhimani, S Bianchini, F Biermann, E Billi, M Biquard, S Bixler, B Bizzarri, L Boada, S Boettger, D Bolliet, B Bond, JR Borrill, J Borrow, J Braithwaite, C Brien, TLR Brown, ML Bruno, SM Bryan, S Bustos, R Cai, H Calabrese, E Calafut, V Carl, FM Carones, A Carron, J Challinor, A Chamberlain, E Chanial, P Chen, N Cheung, K Chiang, B Chinone, Y Chluba, J Cho, HS Choi, SK https://orcid.org/0000-0002-9113-7058 Chu, M Clancy, J Clark, SE Clarke, P Cleary, J Clements, DL Connors, J Contaldi, C Coppi, G Corbett, L Cothard, NF Coulton, W Crichton, D Crowley, KD Crowley, KT Cukierman, A D'Ewart, JM Dachlythra, N Darwish, O Datta, R Day-Weiss, S de Haan, T Desai, S Devlin, M Di Mascolo, L https://escholarship.org/uc/item/66x0511j In 2021 May the Dark Energy Spectroscopic Instrument (DESI) collaboration began a 5 yr spectroscopic redshift survey to produce a detailed map of the evolving three-dimensional structure of the Universe between z = 0 and z ≈ 4. DESI’s principal scientific objectives are to place precise constraints on the equation of state of dark energy, the gravitationally driven growth of large-scale structure, and the sum of the neutrino masses, and to explore the observational signatures of primordial inflation. We present DESI DR1, which consists of all data acquired during the first 13 months of the DESI main survey, as well as a uniform reprocessing of the DESI Survey Validation data, which were previously made public in the DESI Early Data Release. The DR1 main survey includes high-confidence redshifts for 18.7M objects, of which 13.1M are spectroscopically classified as galaxies, 1.6M as quasars, and 4M as stars, making DR1 the largest sample of extragalactic redshifts ever assembled.... https://escholarship.org/uc/item/66x0511j Tue, 5 May 2026 00:00:00 +0000 Collaboration, DESI Karim, M Abdul Adame, AG Aguado, D Aguilar, J Ahlen, S Alam, S Aldering, G Alexander, DM Alfarsy, R Allen, L Prieto, C Allende Alves, O Anand, A https://orcid.org/0000-0003-2923-1585 Andrade, U Armengaud, E Avila, S Aviles, A Awan, H Bailey, S https://orcid.org/0000-0003-4162-6619 Lizancos, A Baleato Ballester, O Bault, A Bautista, J Bean, R Behera, J BenZvi, S Silva, L Beraldo E Bermejo-Climent, JR Beutler, F Bianchi, D Blake, C Blum, R Bolton, AS Bonici, M Brieden, S Brodzeller, A https://orcid.org/0000-0002-8934-0954 Brooks, D Buckley-Geer, E Burtin, E Byström, A Canning, R Rosell, A Carnero Carr, A Carrilho, P Casas, L Castander, FJ Cereskaite, R Cervantes-Cota, JL Chaussidon, E Chaves-Montero, J Chen, S Chen, X Circosta, C Claybaugh, T Cole, S Cooper, AP Cousinou, M-C Cuceu, A https://orcid.org/0000-0002-2169-0595 Davis, TM Dawson, KS de Belsunce, R de la Cruz, R de la Macorra, A de Mattia, A Deiosso, N Della Costa, J Demina, R Demirbozan, U DeRose, J Dey, A Dey, B Ding, J Ding, Z Doel, P Douglass, K Dowicz, M Ebina, H Edelstein, J Eisenstein, DJ Elbers, W Emas, N Escoffier, S Fagrelius, P Fan, X Fanning, K Favole, G Fawcett, VA Fernández-García, E Ferraro, S https://orcid.org/0000-0003-4992-7854 Findlay, N Font-Ribera, A Forero-Romero, JE Forero-Sánchez, D Frenk, CS Gänsicke, BT Galbany, L García-Bellido, J Garcia-Quintero, C Garrison, LH https://escholarship.org/uc/item/5sv2p1vw We measure the amplitude of matter fluctuations over a wide range of redshifts by combining CMB lensing observations from ACT DR6 and Planck PR4 with the overdensity of quasars from Quaia, a Gaia and unWISE quasar catalog. Our analysis includes the CMB lensing power spectrum from ACT DR6, the auto-correlation of two Quaia quasar samples centered at z ≃ 1.0 and z ≃ 2.1, and their cross-correlations with CMB lensing from both ACT DR6 and Planck PR4. By performing a series of contamination and systematic null tests, we find no evidence for contamination in the lensing maps, contrary to what was suggested in previous Quaia cross-correlation analyses using Planck PR4 CMB lensing data. From the joint analysis of the quasar auto- and cross-correlations with CMB lensing, and including BOSS BAO data to break the degeneracy between Ω m and σ 8, we obtain σ 8 = 0.802+0.045 -0.057, consistent with ΛCDM predictions from Planck primary CMB measurements. We also find consistent results using... https://escholarship.org/uc/item/5sv2p1vw Tue, 5 May 2026 00:00:00 +0000 Villagra, Carmen Embil Farren, Gerrit https://orcid.org/0000-0001-5704-1127 Fabbian, Giulio Bolliet, Boris Abril-Cabezas, Irene Alonso, David Challinor, Anthony Dunkley, Jo Kim, Joshua MacCrann, Niall McCarthy, Fiona Moodley, Kavilan Qu, Frank Jia Sherwin, Blake Sifón, Cristóbal van Engelen, Alexander Wollack, Edward J https://escholarship.org/uc/item/5cq952t2 We present Atacama Cosmology Telescope (ACT) Data Release 6 (DR6) maps of the Cosmic Microwave Background temperature and polarization anisotropy at arcminute resolution over three frequency bands centered on 98, 150 and 220 GHz. The maps are based on data collected with the AdvancedACT camera over the period 2017–2022 and cover 19,000 square degrees with a median combined depth of 10 μK arcmin. We describe the instrument, mapmaking and map properties and illustrate them with a number of figures and tables. The ACT DR6 maps and derived products are available on LAMBDA at https://lambda.gsfc.nasa.gov/product/act/actadv_prod_table.html. We also provide an interactive web atlas at https://phy-act1.princeton.edu/public/snaess/actpol/dr6/atlas and HiPS data sets in Aladin (e.g. https://alasky.cds.unistra.fr/ACT/DR4DR6/color_CMB). https://escholarship.org/uc/item/5cq952t2 Tue, 5 May 2026 00:00:00 +0000 Naess, Sigurd Guan, Yilun Duivenvoorden, Adriaan J Hasselfield, Matthew Wang, Yuhan Abril-Cabezas, Irene Addison, Graeme E Ade, Peter AR Aiola, Simone Alford, Tommy Alonso, David Amiri, Mandana An, Rui Atkins, Zachary Austermann, Jason E Barbavara, Eleonora Battaglia, Nicholas Battistelli, Elia Stefano Beall, James A Bean, Rachel Beheshti, Ali Beringue, Benjamin Bhandarkar, Tanay Biermann, Emily Bolliet, Boris Bond, J Richard Calabrese, Erminia Capalbo, Valentina Carrero, Felipe Chen, Stephen Chesmore, Grace Cho, Hsiao-mei Choi, Steve K https://orcid.org/0000-0002-9113-7058 Clark, Susan E Rosado, Rodrigo Cordova Cothard, Nicholas F Coughlin, Kevin Coulton, William Crichton, Devin Crowley, Kevin T Devlin, Mark J Dicker, Simon Duell, Cody J Duff, Shannon M Dunkley, Jo Dunner, Rolando Villagra, Carmen Embil Fankhanel, Max Farren, Gerrit S https://orcid.org/0000-0001-5704-1127 Ferraro, Simone https://orcid.org/0000-0003-4992-7854 Foster, Allen Freundt, Rodrigo Fuzia, Brittany Gallardo, Patricio A Garrido, Xavier Giardiello, Serena Gill, Ajay Givans, Jahmour Gluscevic, Vera Golec, Joseph E Gong, Yulin Halpern, Mark Harrison, Ian Healy, Erin Henderson, Shawn Hensley, Brandon Hervías-Caimapo, Carlos Hill, J Colin Hilton, Gene C Hilton, Matt Hincks, Adam D Hložek, Renée Ho, Shuay-Pwu Patty Hood, John Hornecker, Erika Huber, Zachary B Hubmayr, Johannes Huffenberger, Kevin M Hughes, John P Ikape, Margaret Irwin, Kent Isopi, Giovanni Jense, Hidde T Joshi, Neha Keller, Ben Kim, Joshua Knowles, Kenda Koopman, Brian J Kosowsky, Arthur Kramer, Darby Kusiak, Aleksandra La Posta, Adrien Laguë, Alex Lakey, Victoria Lee, Eunseong Li, Yaqiong Li, Zack Limon, Michele Lokken, Martine Louis, Thibaut https://escholarship.org/uc/item/4pj8f9fn We investigate the impact and mitigation of extragalactic foregrounds for the cosmic microwave background (CMB) lensing power spectrum analysis of Atacama Cosmology Telescope (ACT) data release 6 (DR6) data. Two independent microwave sky simulations are used to test a range of mitigation strategies. We demonstrate that finding and then subtracting point sources, finding and then subtracting models of clusters, and using a profile bias-hardened lensing estimator together reduce the fractional biases to well below statistical uncertainties, with the inferred lensing amplitude, A lens, biased by less than 0.2σ. We also show that another method where a model for the cosmic infrared background (CIB) contribution is deprojected and high-frequency data from Planck is included has similar performance. Other frequency-cleaned options do not perform as well, either incurring a large noise cost or resulting in biased recovery of the lensing spectrum. In addition to these simulation-based... https://escholarship.org/uc/item/4pj8f9fn Tue, 5 May 2026 00:00:00 +0000 MacCrann, Niall Sherwin, Blake D Qu, Frank J Namikawa, Toshiya Madhavacheril, Mathew S Abril-Cabezas, Irene An, Rui Austermann, Jason E Battaglia, Nicholas Battistelli, Elia S Beall, James A Bolliet, Boris Bond, J Richard Cai, Hongbo Calabrese, Erminia Coulton, William R Darwish, Omar Duff, Shannon M Duivenvoorden, Adriaan J Dunkley, Jo Farren, Gerrit S https://orcid.org/0000-0001-5704-1127 Ferraro, Simone https://orcid.org/0000-0003-4992-7854 Golec, Joseph E Guan, Yilun Han, Dongwon Hervías-Caimapo, Carlos Hill, J Colin Hilton, Matt Hložek, Renée Hubmayr, Johannes Kim, Joshua Li, Zack Kosowsky, Arthur Louis, Thibaut McMahon, Jeff Marques, Gabriela A Moodley, Kavilan Naess, Sigurd Niemack, Michael D Page, Lyman Partridge, Bruce Schaan, Emmanuel https://orcid.org/0000-0002-4619-8927 Sehgal, Neelima Sifón, Cristóbal Wollack, Edward J Salatino, Maria Ullom, Joel N Van Lanen, Jeff Van Engelen, Alexander Wenzl, Lukas https://escholarship.org/uc/item/3st1q56j We present the tightest cosmic microwave background (CMB) lensing constraints to date on the growth of structure by combining CMB lensing measurements from the Atacama Cosmology Telescope (ACT), the South Pole Telescope (SPT), and Planck. Each of these surveys individually provides lensing measurements with similarly high statistical power, achieving signal-to-noise ratios of approximately 40. The combined lensing band powers represent the most precise CMB lensing power spectrum measurement to date with a signal-to-noise ratio of 61 and an amplitude of A_{lens}^{recon}=1.025±0.017 with respect to the theory prediction from the best-fit CMB Planck-ACT cosmology. The band powers from all three lensing datasets, analyzed jointly, yield a 1.6% measurement of the parameter combination S_{8}^{CMBL}≡σ_{8}(Ω_{m}/0.3)^{0.25}=0.825_{-0.013}^{+0.015}. Including dark energy spectroscopic instrument baryon acoustic oscillation (BAO) data improves the constraint on the amplitude of matter fluctuations... https://escholarship.org/uc/item/3st1q56j Tue, 5 May 2026 00:00:00 +0000 Qu, Frank J Ge, Fei Wu, WL Kimmy Abril-Cabezas, Irene Madhavacheril, Mathew S Millea, Marius Ahmed, Zeeshan Anderes, Ethan Anderson, Adam J Ansarinejad, Behzad Archipley, Melanie Atkins, Zachary Balkenhol, Lennart Battaglia, Nicholas Benabed, Karim Bender, Amy N Benson, Bradford A Bianchini, Federico Bleem, Lindsey E Bolliet, Boris Bond, J Richard Bouchet, François R Bryant, Lincoln Calabrese, Erminia Camphuis, Etienne Carlstrom, John E Carron, Julien Challinor, Anthony Chang, Clarence L Chaubal, Prakrut Chen, Geoff Chichura, Paul M Choi, Steve K https://orcid.org/0000-0002-9113-7058 Chokshi, Aman Chou, Ti-Lin Coerver, Anna Coulton, William Crawford, Thomas M Daley, Cail Darwish, Omar de Haan, Tijmen Devlin, Mark J Dibert, Karia R Dobbs, Matthew A Doohan, Michael Doussot, Aristide Duivenvoorden, Adriaan J Dunkley, Jo Dunner, Rolando Dutcher, Daniel Villagra, Carmen Embil Everett, Wendy Farren, Gerrit S https://orcid.org/0000-0001-5704-1127 Feng, Chang Ferraro, Simone Ferguson, Kyle R Fichman, Kyra Finson, Emily Foster, Allen Gallardo, Patricio A Galli, Silvia Gambrel, Anne E Gardner, Rob W Goeckner-Wald, Neil Gualtieri, Riccardo Guidi, Federica Guns, Sam Halpern, Mark Halverson, Nils W Hill, J Colin Hilton, Matt Hivon, Eric Holder, Gilbert P Holzapfel, William L https://orcid.org/0000-0002-5744-6439 Hood, John C Howe, Doug Hryciuk, Alec Huang, Nicholas Hubmayr, Johannes Kéruzoré, Florian Khalife, Ali R Kim, Joshua Knox, Lloyd Korman, Milo Kornoelje, Kayla Kosowsky, Arthur Kuo, Chao-Lin Jense, Hidde T La Posta, Adrien Levy, Kevin Lowitz, Amy E Louis, Thibaut Lu, Chunyu Lynch, Gabriel P MacCrann, Niall Maniyar, Abhishek Martsen, Emily S McMahon, Jeff Menanteau, Felipe Montgomery, Joshua https://escholarship.org/uc/item/2rw6m08v A search for Standard Model Higgs bosons produced in association with a high-energy photon and decaying to b b ¯ is performed using 133 fb − 1 of s = 13 TeV pp collision data collected with the ATLAS detector at the Large Hadron Collider at CERN. The photon requirement reduces the multijet background, and the H → b b ¯ decay is the dominant decay mode. Event selection requirements target events produced by vector-boson fusion, the dominant production mode in this channel. Several improvements enhance the search sensitivity compared to previous measurements. These improvements include better background modelling and characterization, the use of a neural-network classifier, and an updated signal extraction strategy adopting a direct binned-likelihood fit to the classifier output. With these improvements, the Higgs boson signal strength is measured to be 0.2 ± 0.7 relative to the Standard Model prediction. This corresponds to an observed significance of 0.3 standard deviations, compared... https://escholarship.org/uc/item/2rw6m08v Tue, 5 May 2026 00:00:00 +0000 Aad, G Aakvaag, E Abbott, B Abdelhameed, S Abeling, K Abicht, NJ Abidi, SH Aboelela, M Aboulhorma, A Abramowicz, H Abulaiti, Y Acharya, BS Ackermann, A Bourdarios, C Adam Adamczyk, L Addepalli, SV Addison, MJ Adelman, J Adiguzel, A Adye, T Affolder, AA https://orcid.org/0000-0002-9058-7217 Afik, Y Agaras, MN Aggarwal, A Agheorghiesei, C Ahmadov, F Ahuja, S Ai, X Aielli, G Aikot, A Tamlihat, M Ait Aitbenchikh, B Akbiyik, M Åkesson, TPA Akimov, AV Akiyama, D Akolkar, NN Aktas, S Alberghi, GL Albert, J Albicocco, P Albouy, GL Alderweireldt, S Alegria, ZL Aleksa, M Aleksandrov, IN Alexa, C Alexopoulos, T Alfonsi, F Algren, M Alhroob, M Ali, B Ali, HMJ Ali, S Alibocus, SW Aliev, M Alimonti, G Alkakhi, W Allaire, C Allbrooke, BMM Allen, JS Allen, JF Allport, PP Aloisio, A Alonso, F Alpigiani, C Alsolami, ZMK Fernandez, A Alvarez Cardoso, M Alves Alviggi, MG Aly, M Coutinho, Y Amaral Ambler, A Amelung, C Amerl, M Ames, CG Amidei, D Amini, B Amirie, K Amirkhanov, A Dos Santos, SP Amor Amos, KR Amperiadou, D An, S Ananiev, V Anastopoulos, C Andeen, T Anders, JK Anderson, AC Andreazza, A Angelidakis, S Angerami, A Anisenkov, AV Annovi, A Antel, C Antipov, E Antonelli, M Anulli, F Aoki, M Aoki, T https://escholarship.org/uc/item/2qh97729 The worldwide distribution of ATLAS computing, based on the amount of CPU provided, in HS23 (see Sect. 4.1 for the precise definition of HS23), on average in 2023–2024. Countries in gray did not contribute significant CPU One correction is noted for the paper [1], which does not affect the results reported. The vertical axis range of the legend of Fig. 1 is corrected as it was reversed in the original publication. https://escholarship.org/uc/item/2qh97729 Tue, 5 May 2026 00:00:00 +0000 Aad, G Aakvaag, E Abbott, B Abdelhameed, S Abeling, K Abicht, NJ Abidi, SH Aboelela, M Aboulhorma, A Abramowicz, H Abulaiti, Y Acharya, BS Ackermann, A Bourdarios, C Adam Adamczyk, L Addepalli, SV Addison, MJ Adelman, J Adiguzel, A Adye, T Affolder, AA https://orcid.org/0000-0002-9058-7217 Afik, Y Agaras, MN Aggarwal, A Agheorghiesei, C Ahmadov, F Ahuja, S Ai, X Aielli, G Aikot, A Tamlihat, M Ait Aitbenchikh, B Akbiyik, M Åkesson, TPA Akimov, AV Akiyama, D Akolkar, NN Aktas, S Alberghi, GL Albert, J Alberti, U Albicocco, P Albouy, GL Alderweireldt, S Alegria, ZL Aleksa, M Aleksandrov, IN Alexa, C Alexopoulos, T Alfonsi, F Algren, M Alhroob, M Ali, B Ali, HMJ Ali, S Alibocus, SW Aliev, M Alimonti, G Alkakhi, W Allaire, C Allbrooke, BMM Allen, JS Allen, JF Allport, PP Aloisio, A Alonso, F Alpigiani, C Alsolami, ZMK Fernandez, A Alvarez Cardoso, M Alves Alviggi, MG Aly, M Coutinho, Y Amaral Ambler, A Amelung, C Amerl, M Ames, CG Amezza, T Amidei, D Amini, B Amirie, K Amirkhanov, A Dos Santos, SP Amor Amos, KR Amperiadou, D An, S Anastopoulos, C Andeen, T Anders, JK Anderson, AC Andreazza, A Angelidakis, S Angerami, A Anisenkov, AV Annovi, A Antel, C Antipov, E Antonelli, M Anulli, F Aoki, M https://escholarship.org/uc/item/2c02x4vs Recent baryonic acoustic oscillation (BAO) measurements from the Dark Energy Spectroscopic Instrument (DESI) are mildly discrepant (2.2σ) with the cosmic microwave background (CMB) when interpreted within ΛCDM. When analyzing these data with extended cosmologies this inconsistency manifests as a ≃3σ preference for subminimal neutrino mass or evolving dark energy. It is known that the preference for subminimal neutrino mass from the suppression of structure growth could be alleviated by increasing the optical depth to reionization τ. We show that, because the CMB-inferred τ is negatively correlated with the matter fraction, a larger optical depth resolves a similar preference from geometric constraints. Optical depths large enough to resolve the neutrino mass tension (τ∼0.09) reduce the preference for evolving dark energy from ≃3σ to ≃1.5σ and increase the CMB-inferred values of ns and H0 to 0.968±0.004 and 67.94±0.44 km/s/Mpc, respectively. Conversely, within ΛCDM the combination... https://escholarship.org/uc/item/2c02x4vs Tue, 5 May 2026 00:00:00 +0000 Sailer, Noah Farren, Gerrit S https://orcid.org/0000-0001-5704-1127 Ferraro, Simone https://orcid.org/0000-0003-4992-7854 White, Martin https://orcid.org/0000-0001-9912-5070 https://escholarship.org/uc/item/2847n4rh The sum of neutrino masses can be measured cosmologically, as the sub-eV particles behave as “hot” dark matter whose main effect is to suppress the clustering of matter compared to a universe with the same amount of purely cold dark matter. Current astronomical data provide an upper limit on between 0.07–0.12 eV at 95% confidence, depending on the choice of data. This bound assumes that the cosmological model is Cold Dark Matter ( ), where dark energy is a cosmological constant, the spatial geometry is flat, and the primordial fluctuations follow a pure power law. Here, we update studies on how the mass limit degrades if we relax these assumptions. To existing data from the satellite we add new gravitational lensing data from the Atacama Cosmology Telescope, the new Type Ia supernova sample from the , and baryonic acoustic oscillation (BAO) measurements from the Sloan Digital Sky Survey and the Dark Energy Spectroscopic Instrument. Using our fiducial data combination,... https://escholarship.org/uc/item/2847n4rh Tue, 5 May 2026 00:00:00 +0000 Shao, Helen Givans, Jahmour J Dunkley, Jo Madhavacheril, Mathew Qu, Frank J Farren, Gerrit https://orcid.org/0000-0001-5704-1127 Sherwin, Blake https://escholarship.org/uc/item/113230xt Recent advances in cosmological observations have provided an unprecedented opportunity to investigate the distribution of baryons relative to the underlying matter. In this work, we show that the gas is more extended than the dark matter, and the amount of baryonic feedback at z≲1 disfavors low-feedback models such as that of state-of-the-art hydrodynamical simulation IllustrisTNG compared with high-feedback models such as that of the original Illustris simulation. This has important implications for bridging the gap between theory and observations and understanding galaxy formation and evolution. Furthermore, a better grasp of the baryon-dark matter link is critical to future cosmological analyses, which are currently impeded by our limited knowledge of baryonic feedback. Here, we measure the kinematic Sunyaev-Zel’dovich (kSZ) effect from the Atacama Cosmology Telescope, stacked on the luminous red galaxy sample of the Dark Energy Spectroscopic Instrument (DESI) imaging survey.... https://escholarship.org/uc/item/113230xt Tue, 5 May 2026 00:00:00 +0000 Hadzhiyska, B Ferraro, S Guachalla, B Ried Schaan, E Aguilar, J Ahlen, S Battaglia, N Bond, JR Brooks, D Calabrese, E Choi, SK https://orcid.org/0000-0002-9113-7058 Claybaugh, T Coulton, WR Dawson, K Devlin, M Dey, B Doel, P Duivenvoorden, AJ Dunkley, J Farren, GS https://orcid.org/0000-0001-5704-1127 Font-Ribera, A Forero-Romero, JE Gallardo, PA Gaztañaga, E Gontcho, S Gontcho Gralla, M Le Guillou, L Gutierrez, G Guy, J https://orcid.org/0000-0001-9822-6793 Hill, JC Hložek, R Honscheid, K Juneau, S Kehoe, R Kisner, T Kremin, A https://orcid.org/0000-0003-0667-5941 Landriau, M Liu, RH Louis, T MacCrann, N de Macorra, A Madhavacheril, M Manera, M Meisner, A Miquel, R Moodley, K Moustakas, J Mroczkowski, T Naess, S Newman, J Niemack, MD Niz, G Page, L Palanque-Delabrouille, N Partridge, B Percival, WJ Prada, F Qu, FJ Rossi, G Sanchez, E Schlegel, D Schubnell, M Sherwin, B Sehgal, N Seo, H Sifón, C Spergel, D Sprayberry, D Staggs, S Tarlé, G Vargas, C Vavagiakis, EM Weaver, BA Wollack, EJ Zhou, R Zou, H https://escholarship.org/uc/item/0xh0h3m1 We use new cosmic microwave background (CMB) primary temperature and polarization anisotropy measurements from the Atacama Cosmology Telescope (ACT) Data Release 6 (DR6) to test foundational assumptions of the standard cosmological model, ΛCDM, and set constraints on extensions to it. We derive constraints from the ACT DR6 power spectra alone, as well as in combination with legacy data from the Planck mission. To break geometric degeneracies, we include ACT and Planck CMB lensing data and baryon acoustic oscillation data from DESI Year-1. To test the dependence of our results on non-ACT data, we also explore combinations replacing Planck with WMAP and DESI with BOSS, and further add supernovae measurements from Pantheon+ for models that affect the late-time expansion history. We verify the near-scale-invariance (running of the spectral index dns /d ln k = 0.0062 ± 0.0052) and adiabaticity of the primordial perturbations. Neutrino properties are consistent with Standard Model predictions:... https://escholarship.org/uc/item/0xh0h3m1 Tue, 5 May 2026 00:00:00 +0000 Calabrese, Erminia Hill, J Colin Jense, Hidde T La Posta, Adrien Abril-Cabezas, Irene Addison, Graeme E Ade, Peter AR Aiola, Simone Alford, Tommy Alonso, David Amiri, Mandana An, Rui Atkins, Zachary Austermann, Jason E Barbavara, Eleonora Barbieri, Nicola Battaglia, Nicholas Battistelli, Elia Stefano Beall, James A Bean, Rachel Beheshti, Ali Beringue, Benjamin Bhandarkar, Tanay Biermann, Emily Bolliet, Boris Bond, J Richard Capalbo, Valentina Carrero, Felipe Chen, Shi-Fan Chesmore, Grace Cho, Hsiao-mei Choi, Steve K https://orcid.org/0000-0002-9113-7058 Clark, Susan E Cothard, Nicholas F Coughlin, Kevin Coulton, William Crichton, Devin Crowley, Kevin T Darwish, Omar Devlin, Mark J Dicker, Simon Duell, Cody J Duff, Shannon M Duivenvoorden, Adriaan J Dunkley, Jo Dunner, Rolando Villagra, Carmen Embil Fankhanel, Max Farren, Gerrit S https://orcid.org/0000-0001-5704-1127 Ferraro, Simone https://orcid.org/0000-0003-4992-7854 Foster, Allen Freundt, Rodrigo Fuzia, Brittany Gallardo, Patricio A Garrido, Xavier Gerbino, Martina Giardiello, Serena Gill, Ajay Givans, Jahmour Gluscevic, Vera Goldstein, Samuel Golec, Joseph E Gong, Yulin Guan, Yilun Halpern, Mark Harrison, Ian Hasselfield, Matthew He, Adam Healy, Erin Henderson, Shawn Hensley, Brandon Hervías-Caimapo, Carlos Hilton, Gene C Hilton, Matt Hincks, Adam D Hložek, Renée Ho, Shuay-Pwu Patty Hood, John Hornecker, Erika Huber, Zachary B Hubmayr, Johannes Huffenberger, Kevin M Hughes, John P Ikape, Margaret Irwin, Kent Isopi, Giovanni Joshi, Neha Keller, Ben Kim, Joshua Knowles, Kenda Koopman, Brian J Kosowsky, Arthur Kramer, Darby Kusiak, Aleksandra Laguë, Alex Lakey, Victoria Lattanzi, Massimiliano Lee, Eunseong Li, Yaqiong Li, Zack https://escholarship.org/uc/item/3pd516fk Arguably, the simplest chiral gauge theories are SO(10) with fermion fields in the spinor representation . We study their dynamics using their supersymmetric limits perturbed by an infinitesimal anomaly mediated supersymmetry breaking as a guide. We predict the theory is gapped for , 2, while the global symmetry is broken to for moderately large . https://escholarship.org/uc/item/3pd516fk Fri, 24 Apr 2026 00:00:00 +0000 Kondo, Dan Murayama, Hitoshi Sylber, Cameron https://escholarship.org/uc/item/2jt500hd We present a 9.3σ detection of the pairwise kinematic Sunyaev-Zel’dovich (kSZ) effect by combining a sample of 913,286 Luminous Red Galaxies (LRGs) from the Dark Energy Spectroscopic Instrument Data Release 1 (DESI DR1) catalog and coadded Atacama Cosmology Telescope (ACT DR6) and Planck cosmic microwave background (CMB) temperature maps. This represents the highest-significance pairwise kSZ measurement to date. The analysis uses three ACT CMB temperature maps: coadded 150 GHz, total frequency maps, and a component separated Internal Linear Combination (ILC) map, all of which cover 19,000 square degrees of the sky from Advanced ACTPol observations conducted between 2017 and 2022. Comparison of the results of these three maps serves as a consistency check for potential foreground contamination that may depend on the observation frequency. An estimate of the best-fit mass-averaged optical depth is obtained by comparing the pairwise kSZ curve with the linear theory prediction of... https://escholarship.org/uc/item/2jt500hd Thu, 23 Apr 2026 00:00:00 +0000 Gong, Yulin Gallardo, Patricio A Bean, Rachel Moore, Jenna Vavagiakis, Eve M Battaglia, Nicholas Hadzhiyska, Boryana Hsu, Yun-Hsin Aguilar, Jessica Nicole Ahlen, Steven Bianchi, Davide Brooks, David Claybaugh, Todd Canning, Rebecca Devlin, Mark Doel, Peter de la Macorra, Axel Ferraro, Simone Font-Ribera, Andreu Forero-Romero, Jaime E Gaztañaga, Enrique Gutierrez, Gaston Gontcho, Satya Gontcho A Guy, Julien https://orcid.org/0000-0001-9822-6793 Honscheid, Klaus Howlett, Cullan Liu, R Henry Ishak, Mustapha Joyce, Dick Kremin, Anthony https://orcid.org/0000-0003-0667-5941 Lamman, Claire Levi, Michael Landriau, Martin Manera, Marc Meisner, Aaron Miquel, Ramon Niemack, Michael D Nadathur, Seshadri Percival, Will Prada, Francisco Rossi, Graziano Guachalla, Bernardita Ried Sanchez, Eusebio Seo, Hee-Jong Sprayberry, David Schlegel, David Sifón, Cristóbal Schubnell, Michael Silber, Joseph Harry https://orcid.org/0000-0002-3461-0320 Tarlé, Gregory Weaver, Benjamin Alan Zhou, Rongpu Zou, Hu https://escholarship.org/uc/item/8sd0j5h0 The distribution of absorption lines in the spectra of distant quasars, called the Lyman-α (Ly-α) forest, is a unique probe of cosmology and the intergalactic medium at high redshifts and small scales. The statistical power of ongoing redshift surveys demands precise theoretical tools to model the Ly-α forest. We address this challenge by developing an analytic, perturbative forward model to predict the Ly-α forest at the field level for a given set of cosmological initial conditions. Our model shows a remarkable performance when compared with the Sherwood hydrodynamic simulations: it reproduces the Ly-α forest flux power spectrum, its cross-correlation with dark matter halos, and the one-point probability distribution function of both fields at the percent level down to scales of a few Mpc. Our work provides crucial tools that bridge analytic modeling on large scales with simulations on small scales, enabling field-level inference from Ly-α forest data and simulation-based priors... https://escholarship.org/uc/item/8sd0j5h0 Wed, 22 Apr 2026 00:00:00 +0000 de Belsunce, Roger Ivanov, Mikhail M Sullivan, James M Akitsu, Kazuyuki Chen, Shi-Fan https://escholarship.org/uc/item/82z920hs The High-latitude Time-domain Survey (HLTDS) for the Nancy Grace Roman Space Telescope (Roman) will discover thousands of high-redshift Type Ia supernovae (SNe Ia) to set generation-defining cosmological constraints on dark energy. To construct the Roman SN Hubble diagram, a strategy to obtain redshifts must be determined. While the nominal HLTDS will use only the Roman prism, in this work, we consider the utility of the Roman grism observations from overlap with the High-latitude Wide-area Survey for SN Ia cosmology. We determine a galaxy grism redshift recovery rate by simulating dispersed grism images and measuring redshifts with the Grizli software, obtaining an H-band 50% redshift recovery at magnitude 20.61 and 90% recovery at magnitude 19.27. To estimate the total number of spectroscopic redshifts expected for Roman SN cosmology, we also consider a Roman prism SN redshift efficiency and a ground-based telescope redshift efficiency for host galaxies. We apply these redshift... https://escholarship.org/uc/item/82z920hs Wed, 22 Apr 2026 00:00:00 +0000 Chen, Rebecca C Guo, Zhiyuan Scolnic, Dan Joshi, Bhavin Kessler, Richard Galbany, Lluís Hounsell, Rebekah Markoff, Diane M Rose, Benjamin M Rubin, David https://orcid.org/0000-0001-5402-4647 Team, The Roman Supernova Cosmology Project Infrastructure https://escholarship.org/uc/item/2pt2m58r We present the results of our pipeline for discovering strong gravitational lenses in the ongoing Ultraviolet Near-Infrared Optical Northern Survey (UNIONS). We successfully train a deep residual convolutional neural network based on CMU-Deeplens architecture, which is designed to detect strong lenses in ground-based imaging surveys. We train on images of real strong lenses and deploy on a sample of 8 million galaxies in areas with full coverage in the g, r, and i filters—the first multiband search for strong gravitational lenses in UNIONS. Following human inspection and grading, we report the discovery of a total of 1346 new strong-lens candidates, of which 146 are Grade A, 199 are Grade B, and 1001 are Grade C. Of these candidates, 283 have lens galaxy spectroscopic redshifts from the Sloan Digital Sky Survey, and an additional 297 have them from the Dark Energy Spectroscopic Instrument Data Release 1. We find 15 of these systems display evidence of both lens and source galaxy... https://escholarship.org/uc/item/2pt2m58r Wed, 22 Apr 2026 00:00:00 +0000 Storfer, Christopher J Magnier, Eugene A Huang, Xiaosheng Rubin, David https://orcid.org/0000-0001-5402-4647 Schlegel, David J https://orcid.org/0000-0002-5042-5088 Banka, Saurav Chambers, Kenneth C Cuillandre, Jean-Charles de Boer, Thomas Gavazzi, Raphaël Gwyn, Stephen Hudson, Michael J Paek, Gregory SH Scott, Douglas https://escholarship.org/uc/item/9s48r5ph The surface–brightness–color (SBC) relationship for Red Clump stars provides a critical foundation for precision distance ladder measurements, including the 1% distance determination to the Large Magellanic Cloud. Current SBC calibrations rely on angular diameter measurements of nearby Red Clump stars obtained through long-baseline optical interferometry using the Very Large Telescope Interferometer. We explore the application of intensity interferometry to measure limb-darkened angular diameters of Red Clump stars, offering a complementary approach to traditional amplitude interferometry. We describe the framework for extracting angular diameters from squared visibility measurements in intensity interferometry, accounting for limb darkening through the stellar atmosphere models. For the Red Clump star HD 17652, we show that intensity interferometry in the H band at baselines matching PIONIER (∼100 m) could achieve <1% angular size uncertainties in 2 hr exposures by measuring... https://escholarship.org/uc/item/9s48r5ph Tue, 21 Apr 2026 00:00:00 +0000 Kim, Alex G https://orcid.org/0000-0001-6315-8743 Kaiser, Robin https://escholarship.org/uc/item/7849z8p9 The second data release (DR2) of the Dark Energy Spectroscopic Instrument (DESI), containing data from the first three years of observations, doubles the number of Lyman-α (Lyα) forest spectra in DR1 and it provides the largest dataset of its kind. To ensure a robust validation of the baryonic acoustic oscillation (BAO) analysis using Lyα forests, we have made significant updates compared to DR1 to both the mocks and the analysis framework used in the validation. In particular, we present CoLoRe-QL, a new set of Lyα mocks that use a quasilinear input power spectrum to incorporate the nonlinear broadening of the BAO peak. We have also increased the number of realizations used in the validation to 400, compared to the 150 realizations used in DR1. Finally, we present a detailed study of the impact of quasar redshift errors on the BAO measurement, and we compare different strategies to mask damped Lyman-α absorbers in our spectra. The BAO measurement from the Lyα dataset of DESI... https://escholarship.org/uc/item/7849z8p9 Thu, 16 Apr 2026 00:00:00 +0000 Casas, L Herrera-Alcantar, HK Chaves-Montero, J Cuceu, A https://orcid.org/0000-0002-2169-0595 Font-Ribera, A Lokken, M Abdul-Karim, M Ramírez-Pérez, C Alonso, D Aguilar, J Ahlen, S Andrade, U Armengaud, E Aviles, A Bailey, S https://orcid.org/0000-0003-4162-6619 BenZvi, S Bianchi, D Brodzeller, A https://orcid.org/0000-0002-8934-0954 Brooks, D Canning, R Rosell, A Carnero Charles, M Chaussidon, E Claybaugh, T Dawson, KS de la Macorra, A de Mattia, A Dey, Arjun Dey, Biprateep Ding, Z Doel, P Eisenstein, DJ Elbers, W Ferraro, S Forero-Romero, JE Garcia-Quintero, C Garrison, Lehman H Gaztañaga, E Gil-Marín, H Gontcho, S Gontcho A Gonzalez-Morales, AX Gordon, C Gutierrez, G Guy, J https://orcid.org/0000-0001-9822-6793 Herbold, M Honscheid, K Howlett, C Huterer, D Ishak, M Juneau, S Kehoe, R Kirkby, D https://orcid.org/0000-0002-8828-5463 Kisner, T Kremin, A https://orcid.org/0000-0003-0667-5941 Lahav, O Landriau, M Le Goff, JM Le Guillou, L Leauthaud, A Levi, ME Li, Q Manera, M Martini, P Meisner, A Mena-Fernández, J Miquel, R Moustakas, J Santos, D Muñoz Myers, AD Nadathur, S Napolitano, L Niz, G Noriega, HE Paillas, E Palanque-Delabrouille, N Percival, WJ Pieri, Matthew M Poppett, C Prada, F Pérez-Ràfols, I Ravoux, C Rossi, G Sanchez, E Schlegel, D Schubnell, M Seo, H Sinigaglia, F Sprayberry, D Tan, T Tarlé, G Taylor, P Turner, W Vargas-Magaña, M Walther, M Weaver, BA Wolfson, M Yèche, C Zarrouk, P Zhou, R https://escholarship.org/uc/item/5320h6fj Imaging systematics refers to the inhomogeneous distribution of a galaxy sample caused by varying observing conditions and astrophysical foregrounds. Current mitigation methods correct the galaxy density fluctuations ngal/n¯gal caused by imaging systematics assuming that all galaxies in a sample have the same ngal/n¯gal. Under this assumption, the corrected sample cannot perfectly recover the true correlation function. We name this effect subsample systematics. For a galaxy sample, even if its overall sample statistics [redshift distribution n(z), galaxy bias b(z)], are accurately measured, n(z), b(z) can still vary across the observed footprint. It makes the correlation function amplitude of galaxy clustering higher, while correlation functions for galaxy-galaxy lensing and cosmic shear do not have noticeable change. Such a combination could potentially degenerate with physical signals on small angular scales, such as the amplitude of galaxy clustering, the impact of neutrino... https://escholarship.org/uc/item/5320h6fj Tue, 14 Apr 2026 00:00:00 +0000 Kong, Hui Chisari, Nora Elisa Leistedt, Boris Gawiser, Eric Rodríguez-Monroy, Martin Weaverdyck, Noah https://orcid.org/0000-0001-9382-5199 https://escholarship.org/uc/item/4zp6k8b7 The detection of primordial gravitational waves in Cosmic Microwave Background B-mode polarization observations requires accurate and robust subtraction of astrophysical contamination. We show, using a blind Spectral Matching Independent Component Analysis, that it is possible to infer unbiased estimates of the primordial B-mode signal from ground-based observations of a small patch of sky even for highly complex foreground contamination. This work, originally performed in the context of configuration studies for a future CMB-S4 observatory, is highly relevant for the analysis of observations by the current generation of CMB experiments. https://escholarship.org/uc/item/4zp6k8b7 Fri, 10 Apr 2026 00:00:00 +0000 Steier, Alexander Ghosh, Shamik https://orcid.org/0000-0002-7546-0509 Delabrouille, Jacques https://escholarship.org/uc/item/4pq1d50s We show that mono-energetic axions are produced in abundance through nuclear de-excitations in nearby galaxies such as M87, which is the central galaxy of the Virgo cluster, and the starburst galaxy M82. If the axion couples to both nucleons and photons and is ultralight, then monochromatic hard x-ray signatures are induced by the subsequent axion-to-photon conversion in the magnetic fields permeating these systems. We search for evidence of such signals using NuSTAR data, focusing specifically on the de-excitation line at 14.4 keV, and we catalog other potentially relevant nuclear lines. We find no evidence for axions from M87 or M82 and set stringent constraints on the combined axion-nucleon and axion-photon coupling at the level of in the limit at 95% confidence. https://escholarship.org/uc/item/4pq1d50s Fri, 10 Apr 2026 00:00:00 +0000 Ning, Orion Ray, Anupam Safdi, Benjamin R https://escholarship.org/uc/item/4mc2c6pb We point out that a QCD-like dark sector can be coupled to the Standard Model by gauging the topological Skyrme current, which measures the dark baryon number in the infrared, to give a technically natural model for dark matter. This coupling allows for a semi-annihilation process χχ → χXμ, where Xμ is the gauge boson mediator and χ a dark pion field, which plays the dominant role in setting the dark matter relic abundance. The topological interaction is purely p-wave and so free from indirect detection constraints. We show that the dark matter pion mass needs to be in the range 10 MeV ≲ mχ ≲ 1 TeV; towards the lighter end of this range, there can moreover be significant self-interactions. We discuss prospects for probing this scenario at collider experiments, ranging from the LHC to low-energy e+e− colliders, future Higgs factories, and beam-dump experiments. https://escholarship.org/uc/item/4mc2c6pb Fri, 10 Apr 2026 00:00:00 +0000 Davighi, Joe Moldovsky, Serah Murayama, Hitoshi Scherb, Christiane https://orcid.org/0000-0002-8146-2623 Selimović, Nudžeim https://escholarship.org/uc/item/2zp95338 We demonstrate that nuclear magnetic resonance based searches for dark matter (DM) have intrinsic and powerful sensitivity to dark photons and the axion-photon coupling. The reason is conceptually straightforward. An instrument such as CASPEr-Gradient begins with a large sample of nuclear spins polarized in a background magnetic field. In the presence of axion DM coupled to nucleons, the spin ensemble feels an effective magnetic field that tilts the spins, generating a potentially observable precession. If the magnetic field is real rather than effective, the system responds identically. A real field can be generated by a kinetically mixed dark photon within the shielded region the sample is placed or an axion coupled to photons through its interaction with the background magnetic field. We show that all three signals are detectable and distinguishable. If CASPEr-Gradient were to reach the QCD axion prediction of the axion-nucleon coupling, it would simultaneously be sensitive... https://escholarship.org/uc/item/2zp95338 Fri, 10 Apr 2026 00:00:00 +0000 Beadle, Carl Ellis, Sebastian AR Leedom, Jacob M Rodd, Nicholas L https://orcid.org/0000-0003-3472-7606 https://escholarship.org/uc/item/0zm412v1 We forecast the reach of the upcoming Cherenkov Telescope Array Observatory (CTAO) to the full set of real representations within the paradigm of minimal dark matter. We employ effective field theory techniques to compute the annihilation cross section and photon spectrum that results when fermionic dark matter is the neutral component of an arbitrary odd and real representation of SU(2), including the Sommerfeld enhancement, next-to-leading log resummation of the relevant electroweak effects, and the contribution from bound states. We also compute the corresponding signals for scalar dark matter, with the exception of the bound state contribution. Results are presented for all real representations from the ~ 3 TeV triplet (or wino), a 3 of SU(2), to the ~ 300 TeV tredecuplet, a 13 of SU(2) that is at the threshold of the unitarity bound. Using these results, we forecast that with 500 hrs of Galactic Center observations and assuming background systematics are controlled at the... https://escholarship.org/uc/item/0zm412v1 Fri, 10 Apr 2026 00:00:00 +0000 Baumgart, Matthew Bottaro, Salvatore Redigolo, Diego Rodd, Nicholas L https://orcid.org/0000-0003-3472-7606 Slatyer, Tracy R https://escholarship.org/uc/item/34x1x8pg The scalability of most transition-edge sensor arrays is limited by the multiplexing technology, which combines their signals over a reduced number of wires and amplifiers. In this Letter, we present and demonstrate a multiplexer design optimized for transition-edge sensor bolometers with 1820 sensors per readout unit, a factor of two more than the previous state-of-the-art. The design is optimized for cosmic microwave background imaging applications, and it builds on previous microwave superconducting quantum interference device multiplexers by doubling the available readout bandwidth to the full 4–8 GHz octave. Evaluating the key performance metrics of yield, sensitivity, and crosstalk through laboratory testing, we find an end-to-end operable detector yield of 78%, a typical nearest-neighbor crosstalk amplitude of ∼0.4%, and a median white noise level of 83 pA/Hz due to the multiplexer, corresponding to an estimated contribution of 4% to the total system noise for a ground-based... https://escholarship.org/uc/item/34x1x8pg Fri, 3 Apr 2026 00:00:00 +0000 Groh, JC Ahmed, Z Austermann, J Beall, J Daniel, D Duff, SM Henderson, SW Hubmayr, J Lew, R Link, M Lucas, TJ Mates, JAB Silva-Feaver, M Singh, R Ullom, J Vale, L Van Lanen, J Vissers, M Yu, C https://escholarship.org/uc/item/87f2w9bz Although discovered more than sixty years ago, direct measurement of the branching fractions is a formidable challenge that has not been attempted. Typically they are assumed to obey the isospin limit in hundreds of particle data measurements. We show that an abundance of recent amplitude analyses and other data, however, enables recovery of the ratios and at precision. https://escholarship.org/uc/item/87f2w9bz Tue, 31 Mar 2026 00:00:00 +0000 Gligorov, Vladimir V Robinson, Dean J https://escholarship.org/uc/item/1k1306zp Unfolding, in the context of high-energy particle physics, refers to the process of removing detector distortions in experimental data. The resulting unfolded measurements are straightforward to use for direct comparisons between experiments and a wide variety of theoretical predictions. For decades, popular unfolding strategies were designed to operate on data formatted as one or more binned histograms. In recent years, new strategies have emerged that use machine learning to unfold datasets in an unbinned manner, allowing for higher-dimensional analyses and more flexibility for current and future users of the unfolded data. This guide comprises recommendations and practical considerations from researchers across a number of major particle physics experiments who have recently put these techniques into practice on real data. https://escholarship.org/uc/item/1k1306zp Tue, 31 Mar 2026 00:00:00 +0000 Canelli, Florencia Cormier, Kyle Cudd, Andrew Gillberg, Dag Huang, Roger G https://orcid.org/0000-0001-9832-1192 Jin, Weijie Lee, Sookhyun Mikuni, Vinicius Miller, Laura Nachman, Benjamin Pan, Jingjing Pani, Tanmay Pettee, Mariel Song, Youqi https://orcid.org/0000-0002-6149-9197 Acosta, Fernando Torales https://escholarship.org/uc/item/0hb581gf We analyze the three-body decays of the long-lived neutral kaon KL → ππa, where a is an axion-like particle (ALP), and compare them to the two-body decay KL → π0a. While the latter requires both flavor violation (FV) and CP violation (CPV), the former can proceed via FV alone, allowing the ratio of decay rates to serve as a probe of CPV of the underlying UV theory. We emphasize the importance of weak-interaction-induced contributions, often neglected in recent calculations. We explore both minimal and non-minimal flavor-violating scenarios, and identify classes of models where ALP production from neutral three-body decays is comparable to — or even dominates over — the two-body decay, despite its reduced phase space. Finally, we discuss the phenomenological implications of our results and show how these decays can provide complementary probes of ALP couplings beyond those accessible via charged kaon channels. https://escholarship.org/uc/item/0hb581gf Tue, 31 Mar 2026 00:00:00 +0000 Balkin, Reuven https://orcid.org/0000-0003-3024-9280 Gori, Stefania Scherb, Christiane https://orcid.org/0000-0002-8146-2623 https://escholarship.org/uc/item/3r5591nf The practice of collider physics typically involves the marginalization of multi-dimensional collider data to uni-dimensional observables relevant for some physics task. In many cases, such as classification or anomaly detection, the observable can be arbitrarily complicated, such as the output of a neural network. However, for precision measurements, the observable must correspond to something computable systematically beyond the level of current simulation tools. In this work, we demonstrate that precision-theory-compatible observable space exploration can be systematized by using neural simulation-based inference techniques from machine learning. We illustrate this approach by exploring the space of marginalizations of the energy 3-point correlator to optimize sensitivity to the top quark mass. We first learn the energy-weighted probability density from simulation, then search in the space of marginalizations for an optimal triangle shape. Although simulations and machine learning... https://escholarship.org/uc/item/3r5591nf Mon, 30 Mar 2026 00:00:00 +0000 Bhattacharya, Arindam Fraser, Katherine https://orcid.org/0000-0003-3723-8517 Schwartz, Matthew D https://escholarship.org/uc/item/03b9v4t7 The LHCb collaboration has recently measured the CP asymmetry in B+ → J/ψπ+ decay, while the Belle II collaboration has recently measured the CP asymmetries in B0 → J/ψπ0 decay. Within the Standard Model, and using flavor-SU(3) relations including first-order breaking corrections, these measurements lead to new predictions with regard to CP violation in B+→ J/ψK+ and $${B}_{s}\to J/\psi {\overline{K} }^{0}$$ decays, the difference between $${S}_{\psi {K}_{S}}$$ and sin 2β, and the rate and CP asymmetries in Bs → J/ψπ0 decay. https://escholarship.org/uc/item/03b9v4t7 Fri, 27 Mar 2026 00:00:00 +0000 Ligeti, Zoltan https://orcid.org/0000-0002-4830-5773 Nir, Yosef Schein, Roy https://escholarship.org/uc/item/1m81j95v The properties of Milky Way satellite galaxies have important implications for galaxy formation, reionization, and the fundamental physics of dark matter. However, the population of Milky Way satellites includes the faintest known galaxies, and current observations are incomplete. To understand the impact of observational selection effects on the known satellite population, we perform rigorous, quantitative estimates of the Milky Way satellite galaxy detection efficiency in three wide-field survey datasets: the Dark Energy Survey Year 6, the DECam Local Volume Exploration Data Release 3, and the Pan-STARRS1 Data Release 1. Together, these surveys cover ∼13,600 deg2 to g ∼ 24.0 and ∼27,700 deg2 to g ∼ 22.5, spanning ∼91% of the high-Galactic-latitude sky (∣b∣ ≥ 15°). We apply multiple detection algorithms over the combined footprint and recover 49 known satellites above a strict census detection threshold. To characterize the sensitivity of our census, we run our detection algorithms... https://escholarship.org/uc/item/1m81j95v Thu, 26 Mar 2026 00:00:00 +0000 Tan, CY Drlica-Wagner, A Pace, AB Cerny, W Nadler, EO https://orcid.org/0000-0002-1182-3825 Doliva-Dolinsky, A Anbajagane, D Li, TS Simon, JD Vivas, AK Walker, AR Adamów, M Bechtol, K Carlin, JL Casey, QO Chang, C Chaturvedi, A Cheng, T-Y Chiti, A Choi, Y Crnojević, D Ferguson, PS Gruendl, RA Ji, AP Limberg, G Medina, GE Mutlu-Pakdil, B Noël, NED Overdeck, K Placco, VM Riley, AH Sand, DJ Sharp, J Sherman, NF Stringfellow, GS Wechsler, RH Aguena, M Allam, S Alves, O Bacon, D Brooks, D Burke, DL Camilleri, R Carballo-Bello, JA Rosell, A Carnero Carretero, J da Costa, LN da Silva Pereira, ME Davis, TM De Vicente, J Desai, S Everett, S Flaugher, B Frieman, J García-Bellido, J Gruen, D Gutierrez, G Herner, K Hinton, SR Hollowood, DL James, DJ Kuehn, K Lahav, O Lee, S Marshall, JL Martínez-Vázquez, CE Massana, P Mena-Fernández, J Miquel, R Muir, J Myles, J Ogando, RLC Malagón, AA Plazas Porredon, A Sanchez, E Cid, D Sanchez Sevilla-Noarbe, I Smith, M Suchyta, E Swanson, MEC To, C Tollerud, EJ Tucker, DL Vikram, V Weaverdyck, N https://orcid.org/0000-0001-9382-5199 Yamamoto, M Zenteno, A https://escholarship.org/uc/item/81g10787 Abstract We investigate how entanglement entropy can drive particle creation, deriving explicit relations between entropy and the radiated particle spectrum, the total number of particles, and the total energy. Particle production is computed for scenarios that include accelerated motion, black hole evaporation, and beta decay, validating against known results while also extending them. We focus primarily on the low-entropy limit (analogous to nonrelativistic motion), but also examine cases of significant particle production arising from harmonic cycles. The results establish an explicit operational link between information flow and matter creation, providing a concrete demonstration of “it from bit”. https://escholarship.org/uc/item/81g10787 Wed, 25 Mar 2026 00:00:00 +0000 Good, Michael RR Ievlev, Evgenii Linder, Eric V https://escholarship.org/uc/item/9cx6h5sc At the Large Hadron Collider, the WbWb final state is expected to be dominated by tt¯$$ t\overline{t} $$ production with a contribution from single-top processes. Differential cross-sections for WbWb production in the dilepton decay channel are measured at the particle level as a function of various kinematic variables. The analysis is based on data from proton-proton collisions at a centre-of-mass energy of s=13$$ \sqrt{s}=13 $$ TeV, recorded by the ATLAS detector at the Large Hadron Collider over the period from 2015 to 2018, corresponding to an integrated luminosity of 140 fb−1. Measurements are performed within the fiducial phase-space defined by the presence of two b-jets and one electron and one muon of opposite charges. The differential cross-sections are corrected for detector effects and unfolded to the particle level. Results are compared with predictions from Monte Carlo event generators at next-to-leading order in perturbative quantum chromodynamics; overall the measurements... https://escholarship.org/uc/item/9cx6h5sc Tue, 24 Mar 2026 00:00:00 +0000 Aad, G Aakvaag, E Abbott, B Abdelhameed, S Abeling, K Abicht, NJ Abidi, SH Aboelela, M Aboulhorma, A Abramowicz, H Abulaiti, Y Acharya, BS Ackermann, A Adam Bourdarios, C Adamczyk, L Addepalli, SV Addison, MJ Adelman, J Adiguzel, A Adye, T Affolder, AA https://orcid.org/0000-0002-9058-7217 Afik, Y Agaras, MN Aggarwal, A Agheorghiesei, C Ahmadov, F Ahuja, S Ai, X Aielli, G Aikot, A Ait Tamlihat, M Aitbenchikh, B Akbiyik, M Åkesson, TPA Akimov, AV Akiyama, D Akolkar, NN Aktas, S Alberghi, GL Albert, J Albicocco, P Albouy, GL Alderweireldt, S Alegria, ZL Aleksa, M Aleksandrov, IN Alexa, C Alexopoulos, T Alfonsi, F Algren, M Alhroob, M Ali, B Ali, HMJ Ali, S Alibocus, SW Aliev, M Alimonti, G Alkakhi, W Allaire, C Allbrooke, BMM Allen, JS Allen, JF Allport, PP Aloisio, A Alonso, F Alpigiani, C Alsolami, ZMK Alvarez Fernandez, A Alves Cardoso, M Alviggi, MG Aly, M Amaral Coutinho, Y Ambler, A Amelung, C Amerl, M Ames, CG Amezza, T Amidei, D Amini, B Amirie, K Amirkhanov, A Amor Dos Santos, SP Amos, KR Amperiadou, D An, S Anastopoulos, C Andeen, T Anders, JK Anderson, AC Andreazza, A Angelidakis, S Angerami, A Anisenkov, AV Annovi, A Antel, C Antipov, E Antonelli, M Anulli, F Aoki, M Aoki, T https://escholarship.org/uc/item/96n4f78z Erratum: Precision measurement of the B0 meson lifetime using B0→J/ψK∗0 decays with the ATLAS detector https://escholarship.org/uc/item/96n4f78z Tue, 24 Mar 2026 00:00:00 +0000 Aad, G Aakvaag, E Abbott, B Abdelhameed, S Abeling, K Abicht, NJ Abidi, SH Aboelela, M Aboulhorma, A Abramowicz, H Abreu, H Abulaiti, Y Acharya, BS Ackermann, A Bourdarios, C Adam Adamczyk, L Addepalli, SV Addison, MJ Adelman, J Adiguzel, A Adye, T Affolder, AA https://orcid.org/0000-0002-9058-7217 Afik, Y Agaras, MN Agarwala, J Aggarwal, A Agheorghiesei, C Ahmadov, F Ahmed, WS Ahuja, S Ai, X Aielli, G Aikot, A Tamlihat, M Ait Aitbenchikh, B Akbiyik, M Åkesson, TPA Akimov, AV Akiyama, D Akolkar, NN Aktas, S Khoury, K Al Alberghi, GL Albert, J Albicocco, P Albouy, GL Alderweireldt, S Alegria, ZL Aleksa, M Aleksandrov, IN Alexa, C Alexopoulos, T Alfonsi, F Algren, M Alhroob, M Ali, B Ali, HMJ Ali, S Alibocus, SW Aliev, M Alimonti, G Alkakhi, W Allaire, C Allbrooke, BMM Allen, JF Flores, CA Allendes Allport, PP Aloisio, A Alonso, F Alpigiani, C Alsolami, ZMK Estevez, M Alvarez Fernandez, A Alvarez Cardoso, M Alves Alviggi, MG Aly, M Coutinho, Y Amaral Ambler, A Amelung, C Amerl, M Ames, CG Amidei, D Amini, B Amirie, K Santos, SP Amor Dos Amos, KR Amperiadou, D An, S Ananiev, V Anastopoulos, C Andeen, T Anders, JK Anderson, AC Andrean, SY Andreazza, A Angelidakis, S Angerami, A Anisenkov, AV Annovi, A Antel, C https://escholarship.org/uc/item/7891q392 A search for Higgs boson pair production in the b b ¯ γ γ final state is performed. The proton–proton collision dataset corresponds to an integrated luminosity of 308 fb − 1 , consisting of two samples, 140 fb − 1 at a centre-of-mass energy of s = 13 TeV and 168 fb − 1 at s = 13.6 TeV , recorded between 2015 and 2024 by the ATLAS detector at the CERN Large Hadron Collider. In addition to a larger dataset, this analysis improves upon the previous search in the same final state through several methodological and technical developments. The Higgs boson pair production cross section divided by the Standard Model prediction is found to be μ H H = 0 . 9 − 1.1 + 1.4 ( μ H H = 1 − 1.0 + 1.3 expected), which translates into a 95% confidence-level upper limit of μHH  < 3.7. At the same confidence level the Higgs self-coupling modifier is constrained to be in the range − 1.6 < κ λ < 6.6 ( − 1.8 < κ λ < 6.9 expected). https://escholarship.org/uc/item/7891q392 Tue, 24 Mar 2026 00:00:00 +0000 Aad, G Aakvaag, E Abbott, B Abdelhameed, S Abeling, K Abicht, NJ Abidi, SH Aboelela, M Aboulhorma, A Abramowicz, H Abulaiti, Y Acharya, BS Ackermann, A Bourdarios, C Adam Adamczyk, L Addepalli, SV Addison, MJ Adelman, J Adiguzel, A Adye, T Affolder, AA https://orcid.org/0000-0002-9058-7217 Afik, Y Agaras, MN Aggarwal, A Agheorghiesei, C Ahmadov, F Ahuja, S Ai, X Aielli, G Aikot, A Tamlihat, M Ait Aitbenchikh, B Akbiyik, M Åkesson, TPA Akimov, AV Akiyama, D Akolkar, NN Aktas, S Alberghi, GL Albert, J Alberti, U Albicocco, P Albouy, GL Alderweireldt, S Alegria, ZL Aleksa, M Aleksandrov, IN Alexa, C Alexopoulos, T Alfonsi, F Algren, M Alhroob, M Ali, B Ali, HMJ Ali, S Alibocus, SW Aliev, M Alimonti, G Alkakhi, W Allaire, C Allbrooke, BMM Allen, JS Allen, JF Allport, PP Aloisio, A Alonso, F Alpigiani, C Alsolami, ZMK Fernandez, A Alvarez Cardoso, M Alves Alviggi, MG Aly, M Coutinho, Y Amaral Ambler, A Amelung, C Amerl, M Ames, CG Amezza, T Amidei, D Amini, B Amirie, K Amirkhanov, A Dos Santos, SP Amor Amos, KR Amperiadou, D An, S Anastopoulos, C Andeen, T Anders, JK Anderson, AC Andreazza, A Angelidakis, S Angerami, A Anisenkov, AV Annovi, A Antel, C Antipov, E Antonelli, M Anulli, F Aoki, M https://escholarship.org/uc/item/720776sn The Mu2e experiment will search for charge-lepton flavor violating (CLFV) muon to electron conversion. It aims to achieve a four-orders of magnitude improvement in sensitivity over previous experiments, allowing it to probe new physics at mass scales up to 1 0 4 TeV . A precision momentum measurement is needed to resolve the monoenergetic electron that is the signal of CLFV conversion from muon decay-in-orbit backgrounds. This is achieved in Mu2e using a low-mass cylindrical straw tracker operated in vacuum, consisting of 21,000 thin-wall mylar straws held at tension. The Mu2e tracker is now in production and will be completed during 2025. We will discuss the design and status of the experiment and the tracker detector, and show results from data taken with the first tracker module. https://escholarship.org/uc/item/720776sn Fri, 20 Mar 2026 00:00:00 +0000 Bonventre, R https://orcid.org/0000-0001-6782-9727 collaboration, Mu2e https://escholarship.org/uc/item/3v55f0k9 Dark matter candidates with masses around the Planck scale are theoretically well-motivated, and it has been suggested that it might be possible to search for dark matter solely via gravitational interactions in this mass range. In this work, we explore the pathway towards searching for dark matter candidates with masses around the Planck scale using mechanical sensors while considering realistic experimental constraints, and develop analysis techniques needed to conduct such searches. These dark matter particles are expected to leave tracks as their signature in mechanical sensor arrays, and we show that we can effectively search for such tracks using statistical approaches to track-finding. We analyze a range of possible experimental setups and compute sensitivity projections for searches for ultraheavy dark matter coupling to the Standard Model via long-range forces. We find that while a search for Planck-scale dark matter purely via gravitational couplings would be exceedingly... https://escholarship.org/uc/item/3v55f0k9 Mon, 16 Mar 2026 00:00:00 +0000 Qin, Juehang Amaral, Dorian WP Bhave, Sunil A Cai, Erqian Carney, Daniel https://orcid.org/0000-0002-4269-8342 Lang, Rafael F Li, Shengchao Marino, Alberto M Marocco, Giacomo Marvinney, Claire Newton, Jared R Taylor, Jacob M Tunnell, Christopher https://escholarship.org/uc/item/2w16r2xw Electron-capture decays of and , and double-electron-capture decays of , are backgrounds in searches for weakly interacting massive particles (WIMPs) conducted by dual-phase xenon time projection chambers such as LUX-ZEPLIN (LZ). These decays produce signals with more light and less charge than equivalent-energy decays and correspondingly overlap more with WIMP signals. We measure three electron-capture charge yields in LZ: the 1.1 keV M-shell, 5.2 keV L-shell, and 33.2 keV K-shell at drift fields of 193 and . The LL double-electron-capture decay of exhibits even more pronounced shifts in charge and light. We provide a first model of double-electron-capture charge yields using the link between ionization density and electron-ion recombination, and identify a need for more accurate calculations. Finally, we discuss the implications of the reduced charge yield of these decays and other interactions creating inner-shell vacancies for future dark matter searches. https://escholarship.org/uc/item/2w16r2xw Mon, 16 Mar 2026 00:00:00 +0000 Aalbers, J Akerib, DS Al Musalhi, AK Alder, F Amarasinghe, CS Ames, A Anderson, TJ https://orcid.org/0000-0002-7113-6840 Angelides, N Araújo, HM Armstrong, JE Arthurs, M Baker, A Balashov, S Bang, J Bargemann, JW Barillier, EE Beattie, K Benson, T Bhatti, A Biekert, A Biesiadzinski, TP Birch, HJ Bishop, E Blockinger, GM Boxer, B Brew, CAJ Brás, P Burdin, S Buuck, M Carmona-Benitez, MC Carter, M Chawla, A Chen, H Cherwinka, JJ Chin, YT Chott, NI Converse, MV Coronel, R Cottle, A Cox, G Curran, D Dahl, CE Darlington, I Dave, S David, A Delgaudio, J Dey, S de Viveiros, L Di Felice, L Ding, C Dobson, JEY Druszkiewicz, E Dubey, S Eriksen, SR Fan, A Fearon, NM Fieldhouse, N Fiorucci, S Flaecher, H Fraser, ED Fruth, TMA Gaitskell, RJ Geffre, A Genovesi, J Ghag, C Gibbons, R Gokhale, S Green, J van der Grinten, MGD Haiston, JJ Hall, CR Hall, T Han, S Hartigan-O’Connor, E Haselschwardt, SJ Hernandez, MA Hertel, SA Heuermann, G Homenides, GJ Horn, M Huang, DQ Hunt, D Jacquet, E James, RS Kannichankandy, MK Kaboth, AC Kamaha, AC Khaitan, D Khazov, A Kim, J Kim, YD Kingston, J Kirk, R Kodroff, D https://orcid.org/0000-0001-6095-2714 Korley, L Korolkova, EV Kraus, H Kravitz, S Kreczko, L Kudryavtsev, VA https://escholarship.org/uc/item/2ks5b3d4 Liquid argon time projection chambers (LArTPCs) rely on highly pure argon to ensure that ionization electrons produced by charged particles reach readout arrays. ProtoDUNE Single-Phase (ProtoDUNE-SP) was an approximately 700-ton liquid argon detector intended to prototype the Deep Underground Neutrino Experiment (DUNE) Far Detector Horizontal Drift module. It contains two drift volumes bisected by the cathode plane assembly, which is biased to create an almost uniform electric field in both volumes. The DUNE Far Detector modules must have robust cryogenic systems capable of filtering argon and supplying the TPC with clean liquid. This paper will explore comparisons of the argon purity measured by the purity monitors with those measured using muons in the TPC from October 2018 to November 2018. A new method is introduced to measure the liquid argon purity in the TPC using muons crossing both drift volumes of ProtoDUNE-SP. For extended periods on the timescale of weeks, the drift... https://escholarship.org/uc/item/2ks5b3d4 Mon, 16 Mar 2026 00:00:00 +0000 Abbaslu, S Abud, A Abed Acciarri, R Accorsi, LP Acero, MA Adames, MR Adamov, G Adamowski, M Adriano, C Akbar, F Alemanno, F Alex, NS Allison, K Alrashed, M Alton, A Alvarez, R Alves, T Aman, A Amar, H Amedo, P Anderson, J Andrade, DA Andreopoulos, C Andreotti, M Andrews, MP Andrianala, F Andringa, S Anjarazafy, F Ansarifard, S Antic, D Antoniassi, M Aranda-Fernandez, A Arellano, L Diaz, E Arrieta Arroyave, MA Arteropons, M Asaadi, J Ascencio, M Ashkenazi, A Asner, D Asquith, L Atkin, E Auguste, D Aurisano, A Aushev, V Autiero, D Gómez, D Ávila Azam, MB Azfar, F Back, A Back, JJ Bae, Y Bagaturia, I Bagby, L Baigarashev, D Balasubramanian, S Balboni, A Baldi, P https://orcid.org/0000-0003-0636-7930 Baldini, W Baldonedo, J Baller, B Bambah, B Barao, F Barbu, D Barenboim, G Alzás, P Barham Barker, GJ Barkhouse, W Barr, G Barros, A Barros, N Barrow, D Barrow, JL Basharina-Freshville, A Bashyal, A Basque, V Bassani, M Basu, D Batchelor, C Bathe-Peters, L Battat, JBR Battisti, F Bautista, J Bay, F Alba, JLL Bazo Beacom, JF Bechetoille, E Behera, B Belchior, E Bell, B Bell, G Bellantoni, L Bellettini, G Bellini, V Beltramello, O Belyaev, A Montiel, C Benitez Benjamin, D Neves, F Bento Berger, J https://escholarship.org/uc/item/3vh4j9zg We present multiwavelength observations of the Swift short γ-ray burst GRB 231117A, localized to an underlying galaxy at redshift z = 0.257 at a small projected offset (∼2 kpc). We uncover long-lived X-ray Chandra X-ray Observatory and radio/millimeter (VLA, MeerKAT, and ALMA) afterglow emission, detected to ∼37 days and ∼20 days (rest frame), respectively. We measure a wide jet (∼10 .° 4) and relatively high circumburst density (∼0.07 cm−3) compared to the short GRB population. Our data cannot be easily fit with a standard forward shock model, but they are generally well fit with the incorporation of a refreshed forward shock and a reverse shock at <1 day. We incorporate GRB 231117A into a larger sample of 132 X-ray detected events, 71 of which were radio-observed (17 cm-band detections), for a systematic study of the distributions of redshifts, jet and afterglow properties, galactocentric offsets, and local environments of events with and without detected radio afterglows.... https://escholarship.org/uc/item/3vh4j9zg Wed, 11 Mar 2026 00:00:00 +0000 Schroeder, Genevieve Fong, Wen-fai Kilpatrick, Charles D Escorial, Alicia Rouco Laskar, Tanmoy Nugent, Anya E Rastinejad, Jillian Alexander, Kate D Berger, Edo Brink, Thomas G Chornock, Ryan https://orcid.org/0000-0002-7706-5668 de Bom, Clecio R Dong, Yuxin Eftekhari, Tarraneh Filippenko, Alexei V https://orcid.org/0000-0003-3460-0103 Fuentes-Carvajal, Celeste Jacobson-Galán, Wynn V Malkan, Matthew https://orcid.org/0000-0001-6919-1237 Margutti, Raffaella https://orcid.org/0000-0003-4768-7586 Pearson, Jeniveve Rhodes, Lauren Salinas, Ricardo Sand, David J Santana-Silva, Luidhy Santos, Andre Sears, Huei Shrestha, Manisha Smith, Nathan Webb, Wayne de Wet, Simon Yang, Yi https://escholarship.org/uc/item/0sj1h6rn Erratum: DESI 2024 V: Full-Shape Galaxy Clustering from Galaxies and Quasars https://escholarship.org/uc/item/0sj1h6rn Tue, 10 Mar 2026 00:00:00 +0000 Adame, AG Aguilar, J Ahlen, S Alam, S Alexander, DM Alvarez, M Alves, O Anand, A https://orcid.org/0000-0003-2923-1585 Andrade, U Armengaud, E Avila, S Aviles, A Awan, H Bailey, S https://orcid.org/0000-0003-4162-6619 Baltay, C Bault, A Behera, J BenZvi, S Beutler, F Bianchi, D Blake, C Blum, R Brieden, S Brodzeller, A https://orcid.org/0000-0002-8934-0954 Brooks, D Buckley-Geer, E Burtin, E Calderon, R Canning, R Rosell, A Carnero Cereskaite, R Cervantes-Cota, JL Chabanier, S Chaussidon, E Chaves-Montero, J Chen, S Chen, X Claybaugh, T Cole, S Cuceu, A https://orcid.org/0000-0002-2169-0595 Davis, TM Dawson, K de la Macorra, A de Mattia, A Deiosso, N Dey, A Dey, B Ding, Z Doel, P Edelstein, J Eftekharzadeh, S Eisenstein, DJ Elliott, A Fagrelius, P Fanning, K Ferraro, S https://orcid.org/0000-0003-4992-7854 Ereza, J Findlay, N Flaugher, B Font-Ribera, A Forero-Sánchez, D Forero-Romero, JE Garcia-Quintero, C Garrison, LH Gaztañaga, E Gil-Marín, H Gontcho, S Gontcho A Gonzalez-Morales, AX Gonzalez-Perez, V Gordon, C Green, D Gruen, D Gsponer, R Gutierrez, G Guy, J https://orcid.org/0000-0001-9822-6793 Hadzhiyska, B Hahn, C Hanif, MMS Herrera-Alcantar, HK Honscheid, K Howlett, C Huterer, D Iršič, V Ishak, M Juneau, S Karaçaylı, NG Kehoe, R Kent, S Kirkby, D https://orcid.org/0000-0002-8828-5463 Kong, H Koposov, SE Kremin, A https://orcid.org/0000-0001-6356-7424 Krolewski, A Lai, Y Lan, T-W Landriau, M https://orcid.org/0000-0003-1838-8528 Lang, D Lasker, J Le Goff, JM Le Guillou, L https://escholarship.org/uc/item/9v04g90w This paper reports measurements of the transverse energy per unit pseudorapidity (dET/dη) produced in Au+Au collisions at sNN=200GeV, performed with the sPHENIX detector at the Relativistic Heavy Ion Collider (RHIC). The results cover the pseudorapidity range |η|<1.1 and constitute the first such measurement performed using a hadronic calorimeter at RHIC. Measurements of dET/dη are presented for a range of centrality intervals and the average dET/dη as a function of the number of participating nucleons, Npart, is compared to a variety of Monte Carlo heavy-ion event generators. The results are in agreement with previous measurements at RHIC, and feature an improved granularity in η and improved precision in low-Npart events. https://escholarship.org/uc/item/9v04g90w Thu, 5 Mar 2026 00:00:00 +0000 Abdulhamid, MI Acharya, U Adams, ER Adawi, G Aidala, CA Akiba, Y Alfred, M Ali, S Alsayegh, A Altaf, S Amedi, H Anderson, DM Andrieux, VV Angerami, A Applegate, N Aso, H Aune, S Azmoun, B Bailey, VR Baranyai, D Bathe, S Bazilevsky, A Bela, S Belmont, R Bennett, J Bernauer, JC Bertaux, J Bi, R Bonenfant, A Boose, S Borchers, C Bossi, H Botsford, R Boucher, R Brahma, A Bryan, JW Cacace, D Cali, I Chamizo-Llatas, M Chauhan, SB Chen, A Chen, D Chen, J Chen, K Chen, KY Cheng, KY Chi, C-Y Chiu, M Clement, J Cline, EW Connors, M Cook, E Corliss, R Morales, Y Corrales Croft, E d'Hose, N Dabas, A Dacosta, D Daradkeh, M Das, SJ Dash, AP David, G Dean, CT Dehmelt, K Dong, X https://orcid.org/0000-0003-3303-0735 Drees, A Durham, JM Enokizono, A Enyo, H Cepero, J Escobar Esha, R Fadem, B Feder, R Finnelli, K Firak, D Francisco, A Frantz, J Frawley, A Fujiki, K Fujiwara, M Garcia, B Garg, P Garmire, G Gentry, E Go, Y Goblin, C Goodman, W Goto, Y Grabas, A Grachov, O Granato, J Grau, N Greene, SV Grossberndt, SK Guidolini-Cecato, R Hachiya, T Haggerty, JS Hamilton, R Hammond, J Hangal, DA https://escholarship.org/uc/item/40d508sk ABSTRACT Recent cosmological analyses measuring distances of type Ia supernovae (SNe Ia) and baryon acoustic oscillations (BAO) have all given similar hints at time-evolving dark energy. To examine whether underestimated SN Ia systematics might be driving these results, Efstathiou (2025) compared overlapping SN events between Pantheon+ and DES-SN5YR (20 per cent SNe are in common), and reported evidence for an $\sim$0.04 mag offset between the low- and high-redshift distance measurements of this subsample of events. If this offset is arbitrarily subtracted from the entire DES-SN5YR sample, the preference for evolving dark energy is reduced. In this paper, we show that this offset is mostly due to different corrections for Malmquist bias between the two samples; therefore, an object-to-object comparison can be misleading. Malmquist bias corrections differ between the two analyses for several reasons. First, DES-SN5YR used an improved model of SN Ia luminosity scatter compared... https://escholarship.org/uc/item/40d508sk Thu, 5 Mar 2026 00:00:00 +0000 Vincenzi, M Kessler, R Shah, P Lee, J Davis, TM Scolnic, D Armstrong, P Brout, D Camilleri, R Chen, R Galbany, L Lidman, C Möller, A Popovic, B Rose, B Sako, M Sánchez, BO Smith, M Sullivan, M Wiseman, P Abbott, TMC Aguena, M Allam, S Andrade-Oliveira, F Bocquet, S Brooks, D Rosell, A Carnero Carretero, J da Costa, LN Pereira, MES Diehl, HT Doel, P Everett, S Flaugher, B Frieman, J García-Bellido, J Gaztanaga, E Gruen, D Gruendl, RA Gutierrez, G Hinton, SR Hollowood, DL Honscheid, K James, DJ Kuehn, K Lahav, O Lee, S Marshall, JL Mena-Fernández, J Miquel, R Muir, J Myles, J Palmese, A Malagón, AA Plazas Porredon, A Samuroff, S Sanchez, E Cid, D Sanchez Sevilla-Noarbe, I Suchyta, E Tarle, G To, C Tucker, DL Vikram, V Walker, AR Weaverdyck, N https://orcid.org/0000-0001-9382-5199 Weller, J https://escholarship.org/uc/item/30b6q2d1 The Lyman-α forests observed in the spectra of high-redshift quasars can be used as a tracer of the cosmological matter density to study baryon acoustic oscillations (BAO) and the Alcock-Paczynski effect. Extraction of cosmological information from these studies requires modeling of the forest correlations. While the models depend most importantly on the bias parameters of the intergalactic medium (IGM), they also depend on the numbers and characteristics of high-column-density systems (HCDs) ranging from Lyman-limit systems with column densities log N HI/1cm-2 > 17 to damped Lyman-α systems (DLAs) with log N HI/1cm-2 > 20.2. These HCDs introduce broad damped absorption characteristic of a Voigt profile. Consequently they imprint a component on the power spectrum whose modes in the radial direction are suppressed, leading to a scale-dependent bias. Using mock data sets of known HCD content, we test a model that describes this effect in terms of the distribution of column... https://escholarship.org/uc/item/30b6q2d1 Thu, 5 Mar 2026 00:00:00 +0000 Tan, T Rich, J Chaussidon, E Le Goff, JM Balland, C Armengaud, E Aguilar, J Ahlen, S Bianchi, D Brooks, D Claybaugh, T Cuceu, A https://orcid.org/0000-0002-2169-0595 de la Macorra, A Doel, P Forero-Romero, JE Gaztañaga, E Gontcho, S Gontcho A Gutierrez, G Herrera-Alcantar, HK Honscheid, K Ishak, M Kirkby, D https://orcid.org/0000-0002-8828-5463 Kisner, T Kremin, A https://orcid.org/0000-0003-0667-5941 Landriau, M https://orcid.org/0000-0003-1838-8528 Le Guillou, L Manera, M Martini, P Miquel, R Nadathur, S Palanque-Delabrouille, N Prada, F Pérez-Ràfols, I Rossi, G Sanchez, E Schlegel, D Schubnell, M Seo, H Silber, J https://orcid.org/0000-0002-3461-0320 Sprayberry, D Tarlé, G Walther, M Weaver, BA Zou, H https://escholarship.org/uc/item/9hs8m826 Emission Line Galaxies (ELGs) are one of the main tracers that the Dark Energy Spectroscopic Instrument (DESI) uses to probe the universe. However, they are afflicted by strong spurious correlations between target density and observing conditions known as imaging systematics. In this paper, we present the imaging systematics mitigation applied to the DESI Data Release 1 (DR1) large-scale structure catalogs used in the DESI 2024 cosmological analyses. We also explore extensions of the fiducial treatment. This includes a combined approach, through forward image simulations (Obiwan) in conjunction with neural network-based regression, to obtain an angular selection function that mitigates the imaging systematics observed in the DESI DR1 ELGs target density. We further derive a line of sight selection function from the forward model that removes the strong redshift dependence between imaging systematics and low redshift ELGs. Combining both angular and redshift-dependent systematics,... https://escholarship.org/uc/item/9hs8m826 Wed, 4 Mar 2026 00:00:00 +0000 Rosado-Marín, AJ Ross, AJ Seo, H Rezaie, M Kong, H de Mattia, A Zhou, R https://orcid.org/0000-0001-5381-4372 Aguilar, J Ahlen, S Alves, O Bianchi, D Brooks, D Burtin, E Chaussidon, E Chen, X Claybaugh, T Dawson, KS de la Macorra, A Dey, A Doel, P Fanning, K Ferraro, S https://orcid.org/0000-0003-4992-7854 Forero-Romero, JE Gaztañaga, E Gontcho, S Gontcho A Gutierrez, G Hahn, C Hanif, MMS Howlett, C Juneau, S Kehoe, R Kisner, T Kremin, A https://orcid.org/0000-0003-0667-5941 Krolewski, A Landriau, M https://orcid.org/0000-0003-1838-8528 Le Guillou, L Levi, ME https://orcid.org/0000-0003-1887-1018 Meisner, A Mena-Fernández, J Miquel, R Moustakas, J Newman, JA Paillas, E Palanque-Delabrouille, N Percival, WJ Prada, F Pérez-Ràfols, I Raichoor, A https://orcid.org/0000-0001-5999-7923 Rossi, G Ruggeri, R Sanchez, E Schlafly, EF https://orcid.org/0000-0002-3569-7421 Schlegel, D Schubnell, M Sprayberry, D Vargas-Magaña, M Weaver, BA Yu, J Zou, H https://escholarship.org/uc/item/8xn4v0s5 Understanding whether cosmic acceleration arises from a cosmological constant or a dynamical component is a central goal of cosmology, and the Dark Energy Spectroscopic Instrument (DESI) enables stringent tests with high-precision distance measurements. Here we analyse measurements of baryon acoustic oscillations in DESI Data Release 1 and Data Release 2 and consider type Ia supernovae and a distance prior for the cosmic microwave background. With the larger statistical power and wider redshift coverage of Data Release 2, the preference for dynamical dark energy does not diminish relative to Data Release 1. Using both a shape-function reconstruction and non-parametric approaches with a Horndeski-motivated correlation prior, we find that the equation of state for dark energy w(z) varies with redshift. Baryon acoustic oscillation data alone yield modest constraints, but in combination with independent supernova compilations and the prior for the cosmic microwave background, they... https://escholarship.org/uc/item/8xn4v0s5 Wed, 4 Mar 2026 00:00:00 +0000 Gu, Gan Wang, Xiaoma Wang, Yuting Zhao, Gong-Bo Pogosian, Levon Koyama, Kazuya Peacock, John A Cai, Zheng Cervantes-Cota, Jorge L Ishak, Mustapha Shafieloo, Arman Zhao, Ruiyang Ahlen, Steven Bianchi, Davide Brooks, David Claybaugh, Todd https://orcid.org/0000-0002-5024-6987 Cole, Shaun de la Macorra, Axel de Mattia, Arnaud Doel, Peter Ferraro, Simone https://orcid.org/0000-0003-4992-7854 Forero-Romero, Jaime E Gaztañaga, Enrique Gontcho A Gontcho, Satya Gutierrez, Gaston Hahn, ChangHoon Howlett, Cullan Kehoe, Robert Kirkby, David https://orcid.org/0000-0002-8828-5463 Kneib, Jean-Paul Kremin, Anthony https://orcid.org/0000-0003-0667-5941 Lahav, Ofer Landriau, Martin https://orcid.org/0000-0003-1838-8528 Le Guillou, Laurent Leauthaud, Alexie Levi, Michael https://orcid.org/0000-0003-1887-1018 Manera, Marc Meisner, Aaron Miquel, Ramon Moustakas, John Muñoz-Gutiérrez, Andrea Nadathur, Seshadri Newman, Jeffrey A Palanque-Delabrouille, Nathalie Percival, Will Prada, Francisco Pérez-Ràfols, Ignasi Rossi, Graziano Samushia, Lado Sanchez, Eusebio Schlegel, David https://orcid.org/0000-0002-5042-5088 Seo, Hee-Jong Sprayberry, David Tarlé, Gregory Walther, Michael Weaver, Benjamin Alan Zarrouk, Pauline Zhao, Cheng Zhou, Rongpu https://orcid.org/0000-0001-5381-4372 Zou, Hu https://escholarship.org/uc/item/4cw6j0rf The gas density profile around galaxies, shaped by feedback and affecting the galaxy lensing signal, is imprinted on the cosmic microwave background (CMB) by the kinematic Sunyaev-Zel’dovich effect (kSZ). We precisely measure this effect (S/N≈10) via velocity stacking with 825,283 spectroscopically confirmed luminous red galaxies (LRG) from the Dark Energy Spectroscopic Instrument Year 1 (DESI Y1) survey, which overlap with the Atacama Cosmology Telescope (ACT) Data Release 6 temperature maps over ≥4,000 deg2. We explore the kSZ dependence with various galaxy parameters and find no significant trend with redshift but clear trends with stellar mass and absolute magnitude in g, r, and z bands. Our analysis suggests that the gas extends beyond the dark matter halo (99.5% confidence level, i.e., probability to exceed (PTE)=0.005). We find a tentative preference for hydrodynamical simulation models with stronger feedback that drives gas further out (Illustris z=0.5, PTE=0.37) over... https://escholarship.org/uc/item/4cw6j0rf Wed, 4 Mar 2026 00:00:00 +0000 Guachalla, Bernardita Ried Schaan, Emmanuel Hadzhiyska, Boryana Ferraro, Simone https://orcid.org/0000-0003-4992-7854 Aguilar, Jessica N Ahlen, Steven Battaglia, Nicholas Bianchi, Davide Bond, Richard Brooks, David Claybaugh, Todd Coulton, William R de la Macorra, Axel Devlin, Mark J Dey, Arjun Doel, Peter Dunkley, Jo Fanning, Kevin Forero-Romero, Jaime Gaztañaga, Enrique Gontcho, Satya Gontcho A Gutierrez, Gaston Guy, Julien https://orcid.org/0000-0001-9822-6793 Hill, J Colin Honscheid, Klaus Juneau, Stephanie Kisner, Theodore Kremin, Anthony https://orcid.org/0000-0003-0667-5941 Lambert, Andrew Landriau, Martin https://orcid.org/0000-0003-1838-8528 Le Guillou, Laurent MacCrann, Niall Manera, Marc Meisner, Aaron Miquel, Ramon Moodley, Kavilan Moustakas, John Mroczkowski, Tony Myers, Adam D Niemack, Michael D Niz, Gustavo Palanque-Delabrouille, Nathalie Percival, Will Pérez-Ràfols, Ignasi Poppett, Claire Prada, Francisco Qu, Frank J Rossi, Graziano Sanchez, Eusebio Schlegel, David Schubnell, Michael Seo, Hee-Jong Sifón, Cristóbal Spergel, David N Sprayberry, David Tarlé, Gregory Vargas-Magaña, Mariana Vavagiakis, Eve M Weaver, Benjamin A Wollack, Edward J Zarrouk, Pauline https://escholarship.org/uc/item/4849h0w9 We present the one-dimensional Lyman-α forest power spectrum measurement derived from the data release 1 (DR1) of the Dark Energy Spectroscopic Instrument (DESI). The measurement of the Lyman-α forest power spectrum along the line of sight from high-redshift quasar spectra provides information on the shape of the linear matter power spectrum, neutrino masses, and the properties of dark matter. In this work, we use a Fast Fourier Transform (FFT)-based estimator, which is validated on synthetic data in a companion paper. Compared to the FFT measurement performed on the DESI early data release, we improve the noise characterization with a cross-exposure estimator and test the robustness of our measurement using various data splits. We also refine the estimation of the uncertainties and now present an estimator for the covariance matrix of the measurement. Furthermore, we compare our results to previous high-resolution and eBOSS measurements. In another companion paper, we present... https://escholarship.org/uc/item/4849h0w9 Wed, 4 Mar 2026 00:00:00 +0000 Ravoux, Corentin Abdul-Karim, Marie-Lynn Le Goff, Jean-Marc Armengaud, Eric Aguilar, Jessica N Ahlen, Steven Bailey, Stephen https://orcid.org/0000-0003-4162-6619 Bianchi, Davide Brodzeller, Allyson https://orcid.org/0000-0002-8934-0954 Brooks, David Chaves-Montero, Jonás Claybaugh, Todd Cuceu, Andrei https://orcid.org/0000-0002-2169-0595 de Belsunce, Roger de la Macorra, Axel Dey, Arjun Ding, Zhejie Doel, Peter Ferraro, Simone https://orcid.org/0000-0003-4992-7854 Font-Ribera, Andreu Forero-Romero, Jaime E Gaztañaga, Enrique Karaçaylı, Naim Göksel Gontcho, Satya Gontcho A Gutierrez, Gaston Guy, Julien https://orcid.org/0000-0001-9822-6793 Herrera-Alcantar, Hiram K Ishak, Mustapha Kehoe, Robert Kirkby, David https://orcid.org/0000-0002-8828-5463 Kisner, Theodore Kremin, Anthony https://orcid.org/0000-0003-0667-5941 Landriau, Martin https://orcid.org/0000-0003-1838-8528 Le Guillou, Laurent Levi, Michael E https://orcid.org/0000-0003-1887-1018 Manera, Marc Martini, Paul Meisner, Aaron Miquel, Ramon Montero-Camacho, Paulo Muñoz-Gutiérrez, Andrea Nadathur, Seshadri Niz, Gustavo Palanque-Delabrouille, Nathalie Pan, Zhiwei Percival, Will J Pérez-Ràfols, Ignasi Pieri, Matthew M Prada, Francisco Rossi, Graziano Sanchez, Eusebio Saulder, Christoph Schlegel, David Schubnell, Michael Seo, Hee-Jong Silber, Joseph H https://orcid.org/0000-0002-3461-0320 Siudek, Małgorzata Sprayberry, David Tan, Ting Tang, Ji-Jia Tarlé, Gregory Walther, Michael Weaver, Benjamin A Yèche, Christophe Yu, Jiaxi Zhou, Rongpu https://orcid.org/0000-0001-5381-4372 Zou, Hu https://escholarship.org/uc/item/40f8n98p The Dark Energy Spectroscopic Instrument (DESI) is a massively parallel spectroscopic survey on the Mayall telescope at Kitt Peak, which has released measurements of baryon acoustic oscillations determined from over 14 million extragalactic targets. We combine DESI Data Release 2 with CMB datasets to search for evidence of matter conversion to dark energy (DE), focusing on a scenario mediated by stellar collapse to cosmologically coupled black holes (CCBHs). In this physical model, which has the same number of free parameters as ΛCDM, DE production is determined by the cosmic star formation rate density (SFRD), allowing for distinct early- and late-time cosmologies. Using two SFRDs to bracket current observations, we find that the CCBH model: accurately recovers the cosmological expansion history, agrees with early-time baryon abundance measured by BBN, reduces tension with the local distance ladder, and relaxes constraints on the summed neutrino mass ∑m_{ν}. For these SFRDs,... https://escholarship.org/uc/item/40f8n98p Wed, 4 Mar 2026 00:00:00 +0000 Ahlen, SP Aviles, A Cartwright, B Croker, KS Elbers, W Farrah, D Fernandez, N Niz, G Rohlf, JW Tarlé, G Windhorst, RA Aguilar, J Andrade, U Bianchi, D Brooks, D Claybaugh, T de la Macorra, A de Mattia, A Dey, B Doel, P Forero-Romero, JE Gaztañaga, E Gontcho, S Gontcho A Gutierrez, G Huterer, D Ishak, M Kehoe, R Kirkby, D https://orcid.org/0000-0002-8828-5463 Kremin, A https://orcid.org/0000-0003-0667-5941 Lahav, O Lamman, C Landriau, M https://orcid.org/0000-0003-1838-8528 Le Guillou, L Levi, ME https://orcid.org/0000-0003-1887-1018 Manera, M Miquel, R Moustakas, J Pérez-Ràfols, I Prada, F Rossi, G Sanchez, E Schubnell, M Seo, H Silber, J https://orcid.org/0000-0002-3461-0320 Sprayberry, D Walther, M Weaver, BA Wechsler, RH Zou, H https://escholarship.org/uc/item/2v5013dn Correlations of fluctuations of the flux in Lyman-α forests of high-redshift quasars have been observed by the Baryonic Acoustic Oscillation Spectroscopy Survey (BOSS) and the Dark Energy Spectroscopy Instrument (DESI) survey where they have revealed the effects of baryon acoustic oscillations (BAO). In order to fit the correlation functions to a physical model and thereby constrain cosmological parameters, it is necessary to take into account the effects of fitting the observed spectra to a template about which the fluctuations are measured. In this paper we use mock spectra to test the distortion matrix technique that has been used since the final BOSS data release to appropriately distort the models. We show that while percent-level effects on the derived forest bias parameters may be present, the technique works sufficiently well that the determination of the BAO peak position is not affected at the percent level. We introduce modifications in the technique used by DESI that... https://escholarship.org/uc/item/2v5013dn Wed, 4 Mar 2026 00:00:00 +0000 Busca, Nicolas Rich, James Bautista, Julian Cuceu, Andrei Font-Ribera, Andreu Guy, Julien https://orcid.org/0000-0001-9822-6793 Herrera-Alcantar, Hiram K Stermer, Julianna Balland, Christophe Aguilar, J Ahlen, S Bianchi, D Brooks, D Claybaugh, T de la Macorra, A Doel, P Ferraro, S Forero-Romero, JE Gaztañaga, E Gordon, C Gutierrez, G Ishak, M Kehoe, R Kirkby, D https://orcid.org/0000-0002-8828-5463 Kremin, A https://orcid.org/0000-0003-0667-5941 Landriau, M Le Guillou, L Magneville, C Martini, P Miquel, R Nadathur, S Palanque-Delabrouille, N Prada, F Pérez-Ràfols, I Ravoux, C Rossi, G Sanchez, E Schlegel, D Seo, H Silber, J https://orcid.org/0000-0002-3461-0320 Sprayberry, D Tarlé, G Weaver, BA Zhou, R Zou, H https://escholarship.org/uc/item/28m236kk The pseudorapidity distribution of charged hadrons produced in Au+Au collisions at a center-of-mass energy of sNN$$ \sqrt{{\textrm{s}}_{\textrm{NN}}} $$ = 200 GeV is measured using data collected by the sPHENIX detector. Charged hadron yields are extracted by counting cluster pairs in the inner and outer layers of the Intermediate Silicon Tracker, with corrections applied for detector acceptance, reconstruction efficiency, combinatorial pairs, and contributions from secondary decays. The measured distributions cover |η| < 1.1 across various centralities, and the average pseudorapidity density of charged hadrons at mid-rapidity is compared to predictions from Monte Carlo heavy-ion event generators. This result, featuring full azimuthal coverage at mid-rapidity, is consistent with previous experimental measurements at the Relativistic Heavy Ion Collider, thereby supporting the broader sPHENIX physics program. https://escholarship.org/uc/item/28m236kk Wed, 4 Mar 2026 00:00:00 +0000 Abdulhamid, MI Acharya, U Adams, ER Adawi, G Aidala, CA Akiba, Y Alfred, M Ali, S Alsayegh, A Altaf, S Amedi, H Anderson, DM Andrieux, VV Angerami, A Applegate, N Aso, H Aune, S Azmoun, B Bailey, VR Baranyai, D Bathe, S Bazilevsky, A Bela, S Belmont, R Bennett, J Bernauer, JC Bertaux, J Bi, R Bonenfant, A Boose, S Borchers, C Bossi, H Botsford, R Boucher, R Brahma, A Bryan, JW Cacace, D Cali, I Chamizo-Llatas, M Chauhan, SB Chen, A Chen, D Chen, J Chen, K Chen, KY Cheng, KY Chi, C-Y Chiu, M Clement, J Cline, EW Connors, M Cook, E Corliss, R Corrales Morales, Y Croft, E d’Hose, N Dabas, A Dacosta, D Daradkeh, M Das, SJ Dash, AP David, G Dean, CT Dehmelt, K Dong, X https://orcid.org/0000-0003-3303-0735 Drees, A Durham, JM Enokizono, A Enyo, H Escobar Cepero, J Esha, R Fadem, B Feder, R Finnelli, K Firak, D Francisco, A Frantz, J Frawley, A Fujiki, K Fujiwara, M Garcia, B Garg, P Garmire, G Gentry, E Go, Y Goblin, C Goodman, W Goto, Y Grabas, A Grachov, O Granato, J Grau, N Greene, SV Grossberndt, SK Guidolini-Cecato, R Hachiya, T Haggerty, JS Hamilton, R Hammond, J Hangal, DA https://escholarship.org/uc/item/1n83m1h6 The Hobby–Eberly Dark Energy Experiment (HETDEX) is an untargeted spectroscopic galaxy survey that uses Lyα-emitting galaxies (LAEs) as tracers of 1.9 < z < 3.5 large-scale structure. Most detections consist of a single emission line, whose identity is inferred via a Bayesian analysis of ancillary data. To determine the accuracy of these line identifications, HETDEX detections were observed with the Dark Energy Spectroscopic Instrument (DESI). In two DESI pointings, high-confidence spectroscopic redshifts are obtained for 1157 sources, including 982 LAEs. The DESI spectra are used to evaluate the accuracy of the HETDEX object classifications and tune the methodology to achieve the HETDEX science requirement of ≲2% contamination of the LAE sample by low-redshift emission-line galaxies, while still assigning 96% of the true Lyα emission sample with the correct spectroscopic redshift. We compare emission-line measurements between the two experiments assuming a simple Gaussian... https://escholarship.org/uc/item/1n83m1h6 Wed, 4 Mar 2026 00:00:00 +0000 Landriau, Martin https://orcid.org/0000-0003-1838-8528 Cooper, Erin Mentuch Davis, Dustin Gebhardt, Karl Ciardullo, Robin Armengaud, Éric Dey, Arjun Raichoor, Anand https://orcid.org/0000-0001-5999-7923 Schlegel, David J https://orcid.org/0000-0002-5042-5088 Wilson, Michael Aguilar, J Ahlen, S Bianchi, D Brooks, D Claybaugh, T de la Macorra, A Ferraro, S https://orcid.org/0000-0003-4992-7854 Forero-Romero, JE Gaztañaga, E Gontcho, S Gontcho A Gutierrez, G Hahn, C Honscheid, K Howlett, C Ishak, M Juneau, S Kehoe, R Kisner, T Kremin, Anthony https://orcid.org/0000-0003-0667-5941 Le Guillou, L Levi, Michael E https://orcid.org/0000-0003-1887-1018 Manera, M Meisner, A Miquel, R Moustakas, J Nadathur, S Pérez-Ràfols, I Poppett, C Prada, F Rossi, G Sanchez, E Schubnell, M Sprayberry, D Tarlé, G Weaver, BA Zhou, R https://orcid.org/0000-0001-5381-4372 Zou, H Farrow, Daniel J Hill, Gary J Jeong, Donghui Liu, Chenxu Saito, Shun Schneider, Donald P https://escholarship.org/uc/item/1ch809d5 We present cosmological constraints on deviations from general relativity (GR) from the first-year of clustering observations from the Dark Energy Spectroscopic Instrument (DESI) in combination with other available datasets including the CMB data from Planck with CMB-lensing from Planck and ACT, BBN constraints on the physical baryon density, the galaxy weak lensing and clustering from DESY3 and supernova data from DESY5. We first consider the μ(a,k)–Σ(a,k) modified gravity (MG) parameterization (as well as η(a,k)) in a ΛCDM and a w 0 wa CDM cosmological backgrounds. Using a functional form for time-only evolution gives μ 0 = 0.11+0.44 -0.54 from DESI(FS+BAO)+BBN and a wide prior on ns . Using DESI(FS+BAO)+CMB+DESY3+DESY5-SN, we obtain μ 0 = 0.05 ± 0.22 and Σ0 = 0.008 ± 0.045 and similarly μ 0 = 0.02+0.19 -0.24 and η 0 = 0.09+0.36 -0.60, in an ΛCDM background. In w 0 wa CDM we obtain μ 0 = -0.24+0.32 -0.28 and Σ0 = 0.006 ± 0.043, consistent with GR, and we still find a preference... https://escholarship.org/uc/item/1ch809d5 Wed, 4 Mar 2026 00:00:00 +0000 Ishak, M Pan, J Calderon, R Lodha, K Valogiannis, G Aviles, A Niz, G Yi, L Zheng, C Garcia-Quintero, C de Mattia, A Medina-Varela, L Cervantes-Cota, JL Andrade, U Huterer, D Noriega, HE Zhao, G Shafieloo, A Fang, W Ahlen, S Bianchi, D Brooks, D Burtin, E Chaussidon, E Claybaugh, T Cole, S de la Macorra, A Dey, A Fanning, K Ferraro, S https://orcid.org/0000-0003-4992-7854 Font-Ribera, A Forero-Romero, JE Gaztañaga, E Gil-Marín, H Gontcho, S Gontcho A Gutierrez, G Hahn, C Honscheid, K Howlett, C Juneau, S Kirkby, D https://orcid.org/0000-0002-8828-5463 Kisner, T Kremin, A https://orcid.org/0000-0003-0667-5941 Landriau, M https://orcid.org/0000-0003-1838-8528 Le Guillou, L Leauthaud, A Levi, ME https://orcid.org/0000-0003-1887-1018 Meisner, A Miquel, R Moustakas, J Newman, JA Palanque-Delabrouille, N Percival, WJ Poppett, C Prada, F Pérez-Ràfols, I Ross, AJ Rossi, G Sanchez, E Schlegel, D Schubnell, M Seo, H Sprayberry, D Tarlé, G Vargas-Magaña, M Weaver, BA Wechsler, RH Yèche, C Zarrouk, P Zhou, R https://orcid.org/0000-0001-5381-4372 Zou, H https://escholarship.org/uc/item/0z2063j6 The spectroscopic data from DESI Data Release 1 (DR1) galaxies enables the analysis of 3D clustering by fitting galaxy power spectra and reconstructed correlation functions in redshift space. Given low measurements of the amplitude of structure from cosmic shear at z ∼ 1, redshift space distortions (RSD) + Baryon Acoustic Oscillation (BAO) signals from DESI galaxies combined with weak lensing can break degeneracies and provide a tight alternative constraint on the z ∼ 1 amplitude of structure. In this paper we perform joint analyses that combine full-shape + post-reconstruction information from the DESI DR1 BGS and LRG samples along with angular cross-correlations with Planck PR4 and ACT DR6 CMB lensing maps. We show that adding galaxy-lensing cross-correlations tightens clustering amplitude constraints, improving σ 8 uncertainties by 30% over RSD+BAO alone. We also include angular galaxy-galaxy and galaxy-lensing spectra using photometric samples from the DESI Legacy Survey to... https://escholarship.org/uc/item/0z2063j6 Wed, 4 Mar 2026 00:00:00 +0000 Maus, M White, M https://orcid.org/0000-0001-9912-5070 Sailer, N Lizancos, A Baleato Ferraro, S https://orcid.org/0000-0003-4992-7854 Chen, S DeRose, J Aguilar, J Ahlen, S BenZvi, S Bianchi, D Brooks, D Burtin, E Castander, FJ Chaussidon, E Claybaugh, T Cuceu, A https://orcid.org/0000-0002-2169-0595 de la Macorra, A de Mattia, A Doel, P Font-Ribera, A Forero-Romero, JE Gaztañaga, E Gontcho, S Gontcho A Gutierrez, G Guy, J https://orcid.org/0000-0001-9822-6793 Honscheid, K Howlett, C Ishak, M Kehoe, R Kirkby, D https://orcid.org/0000-0002-8828-5463 Kisner, T Kremin, A https://orcid.org/0000-0003-0667-5941 Lahav, O Lamman, C Landriau, M https://orcid.org/0000-0003-1838-8528 Le Guillou, L Levi, ME https://orcid.org/0000-0003-1887-1018 Manera, M Meisner, A Miquel, R Nadathur, S Newman, JA Palanque-Delabrouille, N Percival, WJ Prada, F Pérez-Ràfols, I Ross, AJ Rossi, G Samushia, L Sanchez, E Schlegel, D Schubnell, M Seo, H Silber, J https://orcid.org/0000-0002-3461-0320 Sprayberry, D Tarlé, G Weaver, BA Zarrouk, P Zhou, R https://orcid.org/0000-0001-5381-4372 Zou, H https://escholarship.org/uc/item/092750c5 The peak of the matter power spectrum, known as the turnover (TO) scale, is determined by the horizon size at the time of matter-radiation equality. This scale can serve as a standard ruler, independent of other features in the matter power spectrum, such as baryon acoustic oscillations (BAO). Here, we present the first detection of the turnover in the galaxy autopower spectrum, utilizing the distribution of quasars and luminous red galaxies (LRG) measured by the Dark Energy Spectroscopic Instrument (DESI) during its first year of survey operations in a model-independent manner. To avoid confirmation bias, we first analyze the data using data blinding methods designed for the DESI baryon acoustic oscillation, redshift space distortion and scale-dependent bias signals. We measure the angle-averaged dilation distance DV(z=1.651)=(38.1±2.5)rH from the quasars and DV(z=0.733)=(21.8±1.0)rH from the LRG sample in units of the horizon rH at the matter-radiation-equality epoch. Combining... https://escholarship.org/uc/item/092750c5 Wed, 4 Mar 2026 00:00:00 +0000 Bahr-Kalus, B Parkinson, D Lodha, K Mueller, E Chaussidon, E de Mattia, A Forero-Sánchez, D Aguilar, J Ahlen, S Bianchi, D Brooks, D Claybaugh, T Cuceu, A de la Macorra, A Doel, P Font-Ribera, A Gaztañaga, E Gontcho, S Gontcho A Gutierrez, G Honscheid, K Huterer, D Ishak, M Kehoe, R Kent, S Kirkby, D https://orcid.org/0000-0002-8828-5463 Kisner, T Kremin, A https://orcid.org/0000-0003-0667-5941 Lahav, O Landriau, M Le Guillou, L Magneville, C Manera, M Martini, P Meisner, A Miquel, R Moustakas, J Nadathur, S Palanque-Delabrouille, N Percival, WJ Prada, F Pérez-Ràfols, I Ross, AJ Rossi, G Samushia, L Sanchez, E Schlegel, D Schubnell, M Seo, H Silber, J https://orcid.org/0000-0002-3461-0320 Sprayberry, D Tarlé, G Weaver, BA Zhou, R Zou, H https://escholarship.org/uc/item/03q290h9 Over several dedicated programs that include targets beyond the main cosmological samples, the Dark Energy Spectroscopic Instrument collected spectra for 304,970 unique objects in two fields centered on the COSMOS and XMM-LSS fields. In this work, we develop spectroscopic redshift robustness criteria for those spectra, validate these criteria using visual inspection, and provide two custom value-added catalogs with our redshift characterizations. With these criteria, we reliably classify 212,935 galaxies below z < 1.6, 9713 quasars, and 35,222 stars. The resulting catalogs achieve a redshift purity exceeding 99.4% across all galaxy samples. As a critical element in characterizing the selection function, we provide the description of 70 different algorithms that were used to select these targets from imaging data. To facilitate joint imaging/spectroscopic analyses, we provide row-matched photometry from the Dark Energy Camera, Hyper-Suprime Cam, and public COSMOS2020 photometric... https://escholarship.org/uc/item/03q290h9 Wed, 4 Mar 2026 00:00:00 +0000 Ratajczak, J Dawson, KS Weaverdyck, N https://orcid.org/0000-0001-9382-5199 Aguilar, J Ahlen, S Armengaud, E Bailey, S https://orcid.org/0000-0003-4162-6619 Bianchi, D Blanco, D Brodzeller, A https://orcid.org/0000-0002-8934-0954 Brooks, D Castander, FJ Claybaugh, T Cuceu, A https://orcid.org/0000-0002-2169-0595 de la Macorra, A Dey, Arjun Dey, Biprateep Doel, P Font-Ribera, A Forero-Romero, JE Gaztañaga, E Gontcho, S Gontcho A Gutierrez, G Guy, J https://orcid.org/0000-0001-9822-6793 Hagen, T Herrera-Alcantar, HK Honscheid, K Huterer, D Ishak, M Jimenez, J Joyce, R Juneau, S Kehoe, R Kirkby, D https://orcid.org/0000-0002-8828-5463 Kisner, T Koposov, SE Kremin, A https://orcid.org/0000-0003-0667-5941 Lahav, O Lambert, A Lamman, C Landriau, M https://orcid.org/0000-0003-1838-8528 Le Guillou, L Leauthaud, A Lee, J Levi, ME https://orcid.org/0000-0003-1887-1018 Li, Q Longhurst, I Luo, Y https://orcid.org/0000-0001-7729-6629 Manera, M Martini, P McCullough, J Meisner, A Miquel, R Moustakas, J Nadathur, S Newman, JA Palanque-Delabrouille, N Percival, WJ Poppett, C Prada, F Pérez-Ràfols, I Raichoor, A https://orcid.org/0000-0001-5999-7923 Ravoux, C Rossi, G Hernandez, Y Salcedo Sanchez, E Saulder, C Schlegel, D https://orcid.org/0000-0002-5042-5088 Schubnell, M Seo, H Sprayberry, D Tarlé, G Weaver, BA Wechsler, RH White, M https://orcid.org/0000-0001-9912-5070 Zhou, R https://orcid.org/0000-0001-5381-4372 Zou, H https://escholarship.org/uc/item/8gg3z5b3 We present the measurements and cosmological implications of the galaxy two-point clustering using over 4.7 million unique galaxy and quasar redshifts in the range 0.1 < z < 2.1 divided into six redshift bins over a ∼ 7,500 square degree footprint, from the first year of observations with the Dark Energy Spectroscopic Instrument (DESI Data Release 1). By fitting the full power spectrum, we extend previous DESI DR1 baryon acoustic oscillation (BAO) measurements to include redshift-space distortions and signals from the matter-radiation equality scale. For the first time, this Full-Shape analysis is blinded at the catalogue-level to avoid confirmation bias and the systematic errors are accounted for at the two-point clustering level, which automatically propagates them into any cosmological parameter. When analysing the data in terms of compressed model-agnostic variables, we obtain a combined precision of 4.7% on the amplitude of the redshift space distortion (RSD) signal... https://escholarship.org/uc/item/8gg3z5b3 Tue, 3 Mar 2026 00:00:00 +0000 Adame, AG Aguilar, J Ahlen, S Alam, S Alexander, DM Alvarez, M Alves, O Anand, A https://orcid.org/0000-0003-2923-1585 Andrade, U Armengaud, E Avila, S Aviles, A Awan, H Bailey, S https://orcid.org/0000-0003-4162-6619 Baltay, C Bault, A Behera, J BenZvi, S Beutler, F Bianchi, D Blake, C Blum, R Brieden, S Brodzeller, A https://orcid.org/0000-0002-8934-0954 Brooks, D Buckley-Geer, E Burtin, E Calderon, R Canning, R Rosell, A Carnero Cereskaite, R Cervantes-Cota, JL Chabanier, S Chaussidon, E Chaves-Montero, J Chen, S Chen, X Claybaugh, T Cole, S Cuceu, A https://orcid.org/0000-0002-2169-0595 Davis, TM Dawson, K de la Macorra, A de Mattia, A Deiosso, N Dey, A Dey, B Ding, Z Doel, P Edelstein, J Eftekharzadeh, S Eisenstein, DJ Elliott, A Fagrelius, P Fanning, K Ferraro, S https://orcid.org/0000-0003-4992-7854 Ereza, J Findlay, N Flaugher, B Font-Ribera, A Forero-Sánchez, D Forero-Romero, JE Garcia-Quintero, C Garrison, LH Gaztañaga, E Gil-Marín, H Gontcho, S Gontcho A Gonzalez-Morales, AX Gonzalez-Perez, V Gordon, C Green, D Gruen, D Gsponer, R Gutierrez, G Guy, J https://orcid.org/0000-0001-9822-6793 Hadzhiyska, B Hahn, C Hanif, MMS Herrera-Alcantar, HK Honscheid, K Howlett, C Huterer, D Iršič, V Ishak, M Juneau, S Karaçaylı, NG Kehoe, R Kent, S Kirkby, D https://orcid.org/0000-0002-8828-5463 Kong, H Koposov, SE Kremin, A https://orcid.org/0000-0003-0667-5941 Krolewski, A Lai, Y Lan, T-W Landriau, M https://orcid.org/0000-0003-1838-8528 Lang, D Lasker, J Le Goff, JM Le Guillou, L https://escholarship.org/uc/item/5wc9q1rk We present cosmological results from the measurement of clustering of galaxy, quasar and Lyman-α forest tracers from the first year of observations with the Dark Energy Spectroscopic Instrument (DESI Data Release 1). We adopt the full-shape (FS) modeling of the power spectrum, including the effects of redshift-space distortions, in an analysis which has been thoroughly validated in a series of supporting papers as summarised in [1]. We combine the full-shape information with DESI's DR1 constraints from the baryon acoustic oscillations (BAO) of these tracers. In the flat ΛCDM cosmological model, DESI (FS+BAO), combined with a baryon density prior from Big Bang Nucleosynthesis and a weak prior on the scalar spectral index, determines matter density to Ωm = 0.2962 ± 0.0095, and the amplitude of mass fluctuations to σ 8 = 0.842 ± 0.034. The addition of the cosmic microwave background (CMB) data tightens these constraints to Ωm = 0.3056 ± 0.0049 and σ 8 = 0.8121 ± 0.0053, while further... https://escholarship.org/uc/item/5wc9q1rk Tue, 3 Mar 2026 00:00:00 +0000 Adame, AG Aguilar, J Ahlen, S Alam, S Alexander, DM Prieto, C Allende Alvarez, M Alves, O Anand, A https://orcid.org/0000-0003-2923-1585 Andrade, U Armengaud, E Avila, S Aviles, A Awan, H Bahr-Kalus, B Bailey, S https://orcid.org/0000-0003-4162-6619 Baltay, C Bault, A Behera, J BenZvi, S Beutler, F Bianchi, D Blake, C Blum, R Bonici, M Brieden, S Brodzeller, A https://orcid.org/0000-0002-8934-0954 Brooks, D Buckley-Geer, E Burtin, E Calderon, R Canning, R Rosell, A Carnero Cereskaite, R Cervantes-Cota, JL Chabanier, S Chaussidon, E Chaves-Montero, J Chebat, D Chen, S Chen, X Claybaugh, T Cole, S Cuceu, A https://orcid.org/0000-0002-2169-0595 Davis, TM Dawson, K de la Macorra, A de Mattia, A Deiosso, N Dey, A Dey, B Ding, Z Doel, P Edelstein, J Eftekharzadeh, S Eisenstein, DJ Elbers, W Elliott, A Fagrelius, P Fanning, K Ferraro, S https://orcid.org/0000-0003-4992-7854 Ereza, J Findlay, N Flaugher, B Font-Ribera, A Forero-Sánchez, D Forero-Romero, JE Frenk, CS Garcia-Quintero, C Garrison, LH Gaztañaga, E Gil-Marín, H Gontcho, S Gontcho A Gonzalez-Morales, AX Gonzalez-Perez, V Gordon, C Green, D Gruen, D Gsponer, R Gutierrez, G Guy, J https://orcid.org/0000-0001-9822-6793 Hadzhiyska, B Hahn, C Hanif, MMS Herrera-Alcantar, HK Honscheid, K Howlett, C Huterer, D Iršič, V Ishak, M Joyce, R Juneau, S Karaçaylı, NG Kehoe, R Kent, S Kirkby, D https://orcid.org/0000-0002-8828-5463 Kong, H Koposov, SE Kremin, A https://orcid.org/0000-0003-0667-5941 Krolewski, A https://escholarship.org/uc/item/5js1s12m We present the largest catalog to date of triply ionized carbon (C iv) absorbers detected in quasar spectra from the Dark Energy Spectroscopic Instrument. Using an automated matched-kernel convolution method with adaptive signal-to-noise thresholds, we identify 101,487 C iv systems in the redshift range 1.4 < z < 4.5 from 300,637 quasar spectra. Completeness is estimated via Monte Carlo simulations, and the catalog is 50% complete at EWC IV ≥ 0.4 Å. The differential equivalent width frequency distribution declines exponentially and shows weak redshift evolution. The absorber incidence per unit comoving path increases by a factor of 2–5 from z ≈ 4.5 to z ≈ 1.4, with stronger redshift evolution for strong systems. Using column densities derived from the apparent optical depth method, we constrain the cosmic mass density of C iv, ΩC IV, which increases by a factor of ∼3.8 from (0.82 ± 0.05) × 10−8 at z ≈ 4.5 to (3.16 ± 0.2) × 10−8 at z ≈ 1.4. From ΩC IV, we estimate a lower... https://escholarship.org/uc/item/5js1s12m Tue, 3 Mar 2026 00:00:00 +0000 Anand, Abhijeet https://orcid.org/0000-0003-2923-1585 Aguilar, J Ahlen, S Bianchi, D Brodzeller, A https://orcid.org/0000-0002-8934-0954 Brooks, D Canning, R Claybaugh, T Cuceu, A https://orcid.org/0000-0002-2169-0595 de la Macorra, A Doel, P Ferraro, S https://orcid.org/0000-0003-4992-7854 Font-Ribera, A Forero-Romero, JE Gaztañaga, E Gontcho, S Gontcho A Gutierrez, G Guy, J https://orcid.org/0000-0001-9822-6793 Herrera-Alcantar, HK Ishak, M Juneau, S Kehoe, R Kremin, A https://orcid.org/0000-0003-0667-5941 Landriau, M https://orcid.org/0000-0003-1838-8528 Le Guillou, L Levi, ME https://orcid.org/0000-0003-1887-1018 Manera, M Meisner, A Miquel, R Moustakas, J Muñoz-Gutiérrez, A Napolitano, L Pérez-Ràfols, I Rossi, G Sanchez, E Schlegel, D https://orcid.org/0000-0002-5042-5088 Schubnell, M Sprayberry, D Tarlé, G Temple, MJ Weaver, BA Zhou, R https://orcid.org/0000-0001-5381-4372 https://escholarship.org/uc/item/4769b7kc The Dark Energy Spectroscopic Instrument (DESI) survey uses an automatic spectral classification pipeline to classify spectra. QuasarNET is a convolutional neural network used as part of this pipeline originally trained using data from the Baryon Oscillation Spectroscopic Survey (BOSS). In this paper we implement an active learning algorithm to optimally select spectra to use for training a new version of the QuasarNET weights file using only DESI data, with the goal of improving classification accuracy. This active learning algorithm includes a novel outlier rejection step using a Self-Organizing Map to ensure we label spectra representative of the larger quasar sample observed in DESI. We perform two iterations of the active learning pipeline, assembling a final dataset of 5600 labeled spectra, a small subset of the approximately 1.3 million quasar targets in DESI's Data Release 1. When splitting the spectra into training and validation subsets we achieve similar performance... https://escholarship.org/uc/item/4769b7kc Tue, 3 Mar 2026 00:00:00 +0000 Green, Dylan Kirkby, David https://orcid.org/0000-0002-8828-5463 Aguilar, J Ahlen, S Alexander, DM Armengaud, E Bailey, S https://orcid.org/0000-0003-4162-6619 Bault, A Bianchi, D Brodzeller, A https://orcid.org/0000-0002-8934-0954 Brooks, D Claybaugh, T de Belsunce, R de la Macorra, A Doel, P Fawcett, VA Ferraro, S https://orcid.org/0000-0003-4992-7854 Font-Ribera, A Forero-Romero, JE Gaztañaga, E Gontcho, S Gontcho A Gutierrez, G Ishak, M Juneau, S Kehoe, R Kisner, T Kremin, A https://orcid.org/0000-0003-0667-5941 Lambert, A Landriau, M https://orcid.org/0000-0003-1838-8528 Le Guillou, L Levi, ME https://orcid.org/0000-0003-1887-1018 Manera, M Meisner, A Miquel, R Moustakas, J Myers, AD Palanque-Delabrouille, N Prada, F Pérez-Ràfols, I Rossi, G Sanchez, E Saulder, C Schlegel, D Schubnell, M Seo, H Sinigaglia, F Sprayberry, D Tan, T Tarlé, G Weaver, BA Youles, S Yu, J Zhou, R https://orcid.org/0000-0001-5381-4372 Zou, H https://escholarship.org/uc/item/3655d6bp The one-dimensional power spectrum P 1D of Lyα forest offers rich insights into cosmological and astrophysical parameters, including constraints on the sum of neutrino masses, warm dark matter models, and the thermal state of the intergalactic medium. We present the measurement of P 1D using the optimal quadratic maximum likelihood estimator applied to over 300,000 Lyα quasars from Data Release 1 (DR1) of the Dark Energy Spectroscopic Instrument (DESI) survey. This sample represents the largest to date for P 1D measurements and is larger than the Extended Baryon Oscillation Spectroscopic Survey (eBOSS) by a factor of 1.7. We conduct a meticulous investigation of instrumental and analysis systematics and quantify their impact on P 1D. This includes the development of a cross-exposure estimator that eliminates the need to model the pipeline noise and has strong potential for future P 1D measurements. We also present new insights into metal contamination through the 1D correlation... https://escholarship.org/uc/item/3655d6bp Tue, 3 Mar 2026 00:00:00 +0000 Karaçaylı, Naim Göksel Martini, Paul Aguilar, J Ahlen, S Armengaud, E Bailey, S https://orcid.org/0000-0003-4162-6619 Bault, A Bianchi, D Brodzeller, A https://orcid.org/0000-0002-8934-0954 Brooks, D Chaves-Montero, J Claybaugh, T Cuceu, A https://orcid.org/0000-0002-2169-0595 de la Macorra, A Dey, A Dey, B Doel, P Ferraro, S https://orcid.org/0000-0003-4992-7854 Font-Ribera, A Forero-Romero, JE Gaztañaga, E Gontcho, S Gontcho A Gutierrez, G Guy, J https://orcid.org/0000-0001-9822-6793 Hahn, C Herrera-Alcantar, HK Honscheid, K Ishak, M Kehoe, R Kirkby, D https://orcid.org/0000-0002-8828-5463 Kremin, A https://orcid.org/0000-0003-0667-5941 Landriau, M https://orcid.org/0000-0003-1838-8528 Le Goff, JM Le Guillou, L Levi, ME https://orcid.org/0000-0003-1887-1018 Manera, M Meisner, A Miquel, R Montero-Camacho, P Nadathur, S Niz, G Palanque-Delabrouille, N Pan, Z Percival, WJ Pieri, Matthew M Prada, F Pérez-Ràfols, I Ravoux, C Rossi, G Sanchez, E Saulder, C Schlegel, D Schubnell, M Seo, H Siudek, M Sprayberry, D Tan, T Tang, Ji-Jia Tarlé, G Walther, M Weaver, BA Yu, J Zhou, R https://orcid.org/0000-0001-5381-4372 Zou, H https://escholarship.org/uc/item/5157h51h ABSTRACT The Dark Energy Spectroscopic Instrument (DESI) peculiar velocity survey aims to measure the peculiar velocities of early- and late-type galaxies within the DESI footprint using both the Fundamental Plane and optical Tully–Fisher relations. Direct measurements of peculiar velocities can significantly improve constraints on the growth rate of structure, reducing uncertainty by a factor of approximately 2.5 at redshift 0.1 compared to the DESI Bright Galaxy Survey’s redshift space distortion measurements alone. We assess the quality of stellar velocity dispersion measurements from DESI spectroscopic data. These measurements, along with photometric data from the Legacy Survey, establish the Fundamental Plane relation and determine distances and peculiar velocities of early-type galaxies. During survey validation, we obtain spectra for 6698 unique early-type galaxies, up to a photometric redshift of 0.15. 64 per cent of observed galaxies (4267) have relative velocity... https://escholarship.org/uc/item/5157h51h Tue, 24 Feb 2026 00:00:00 +0000 Said, Khaled Howlett, Cullan Davis, Tamara Lucey, John Saulder, Christoph Douglass, Kelly Kim, Alex G https://orcid.org/0000-0001-6315-8743 Kremin, Anthony https://orcid.org/0000-0003-0667-5941 Ross, Caitlin Aldering, Greg Aguilar, Jessica Nicole Ahlen, Steven BenZvi, Segev Bianchi, Davide Brooks, David Claybaugh, Todd Dawson, Kyle de la Macorra, Axel Dey, Biprateep Doel, Peter Fanning, Kevin Ferraro, Simone Font-Ribera, Andreu Forero-Romero, Jaime E Gaztañaga, Enrique Gontcho, Satya Gontcho A Guy, Julien https://orcid.org/0000-0001-9822-6793 Honscheid, Klaus Kehoe, Robert Kisner, Theodore Lambert, Andrew Landriau, Martin Le Guillou, Laurent Manera, Marc Meisner, Aaron Miquel, Ramon Moustakas, John Muñoz-Gutiérrez, Andrea Myers, Adam Nie, Jundan Palanque-Delabrouille, Nathalie Percival, Will Prada, Francisco Rossi, Graziano Sanchez, Eusebio Schlegel, David Schubnell, Michael Silber, Joseph Harry https://orcid.org/0000-0002-3461-0320 Sprayberry, David Tarlé, Gregory Magana, Mariana Vargas Weaver, Benjamin Alan Wechsler, Risa Zhou, Zhimin Zou, Hu