Skip to main content
eScholarship
Open Access Publications from the University of California

Search for top squarks in events with a Higgs or Z boson using 139 fb - 1 of pp collision data at √s=13 TeV with the ATLAS detector

  • Author(s): Aad, G;
  • Abbott, B;
  • Abbott, DC;
  • Abud, AA;
  • Abeling, K;
  • Abhayasinghe, DK;
  • Abidi, SH;
  • AbouZeid, OS;
  • Abraham, NL;
  • Abramowicz, H;
  • Abreu, H;
  • Abulaiti, Y;
  • Acharya, BS;
  • Achkar, B;
  • Adam, L;
  • Bourdarios, CA;
  • Adamczyk, L;
  • Adamek, L;
  • Adelman, J;
  • Adersberger, M;
  • Adiguzel, A;
  • Adorni, S;
  • Adye, T;
  • Affolder, AA;
  • Afik, Y;
  • Agapopoulou, C;
  • Agaras, MN;
  • Aggarwal, A;
  • Agheorghiesei, C;
  • Aguilar-Saavedra, JA;
  • Ahmad, A;
  • Ahmadov, F;
  • Ahmed, WS;
  • Ai, X;
  • Aielli, G;
  • Akatsuka, S;
  • Akbiyik, M;
  • Åkesson, TPA;
  • Akilli, E;
  • Akimov, AV;
  • Khoury, KA;
  • Alberghi, GL;
  • Albert, J;
  • Verzini, MJA;
  • Alderweireldt, S;
  • Aleksa, M;
  • Aleksandrov, IN;
  • Alexa, C;
  • Alexopoulos, T;
  • Alfonsi, A;
  • Alfonsi, F;
  • Alhroob, M;
  • Ali, B;
  • Ali, S;
  • Aliev, M;
  • Alimonti, G;
  • Allaire, C;
  • Allbrooke, BMM;
  • Allen, BW;
  • Allport, PP;
  • Aloisio, A;
  • Alonso, F;
  • Alpigiani, C;
  • Camelia, EA;
  • Estevez, MA;
  • Alviggi, MG;
  • Coutinho, YA;
  • Ambler, A;
  • Ambroz, L;
  • Amelung, C;
  • Amidei, D;
  • Santos, SPAD;
  • Amoroso, S;
  • Amrouche, CS;
  • An, F;
  • Anastopoulos, C;
  • Andari, N;
  • Andeen, T;
  • Anders, JK;
  • Andrean, SY;
  • Andreazza, A;
  • Andrei, V;
  • Anelli, CR;
  • Angelidakis, S;
  • Angerami, A;
  • Anisenkov, AV;
  • Annovi, A;
  • Antel, C;
  • Anthony, MT;
  • Antipov, E;
  • Antonelli, M;
  • Antrim, DJA;
  • Anulli, F;
  • Aoki, M;
  • Pozo, JAA;
  • Aparo, MA;
  • Bella, LA;
  • Barrio, NA;
  • Ferraz, VA;
  • Pereira, RA
  • et al.
Abstract

This paper presents a search for direct top squark pair production in events with missing transverse momentum plus either a pair of jets consistent with Standard Model Higgs boson decay into b-quarks or a same-flavour opposite-sign dilepton pair with an invariant mass consistent with a Z boson. The analysis is performed using the proton–proton collision data at s=13 TeV collected with the ATLAS detector during the LHC Run-2, corresponding to an integrated luminosity of 139 fb- 1. No excess is observed in the data above the Standard Model predictions. The results are interpreted in simplified models featuring direct production of pairs of either the lighter top squark (t~ 1) or the heavier top squark (t~ 2), excluding at 95% confidence level t~ 1 and t~ 2 masses up to about 1220 and 875 GeV, respectively.

Main Content
For improved accessibility of PDF content, download the file to your device.
Current View