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

UCLA

UCLA Previously Published Works bannerUCLA

Jet-like correlations with direct-photon and neutral-pion triggers at sNN=200 GeV

  • Author(s): Adamczyk, L
  • Adkins, JK
  • Agakishiev, G
  • Aggarwal, MM
  • Ahammed, Z
  • Alekseev, I
  • Anderson, DM
  • Aparin, A
  • Arkhipkin, D
  • Aschenauer, EC
  • Ashraf, MU
  • Attri, A
  • Averichev, GS
  • Bai, X
  • Bairathi, V
  • Bellwied, R
  • Bhasin, A
  • Bhati, AK
  • Bhattarai, P
  • Bielcik, J
  • Bielcikova, J
  • Bland, LC
  • Bordyuzhin, IG
  • Bouchet, J
  • Brandenburg, JD
  • Brandin, AV
  • Bunzarov, I
  • Butterworth, J
  • Caines, H
  • Calderón de la Barca Sánchez, M
  • Campbell, JM
  • Cebra, D
  • Chakaberia, I
  • Chaloupka, P
  • Chang, Z
  • Chatterjee, A
  • Chattopadhyay, S
  • Chen, X
  • Chen, JH
  • Cheng, J
  • Cherney, M
  • Christie, W
  • Contin, G
  • Crawford, HJ
  • Das, S
  • De Silva, LC
  • Debbe, RR
  • Dedovich, TG
  • Deng, J
  • Derevschikov, AA
  • di Ruzza, B
  • Didenko, L
  • Dilks, C
  • Dong, X
  • Drachenberg, JL
  • Draper, JE
  • Du, CM
  • Dunkelberger, LE
  • Dunlop, JC
  • Efimov, LG
  • Engelage, J
  • Eppley, G
  • Esha, R
  • Evdokimov, O
  • Eyser, O
  • Fatemi, R
  • Fazio, S
  • Federic, P
  • Fedorisin, J
  • Feng, Z
  • Filip, P
  • Fisyak, Y
  • Flores, CE
  • Fulek, L
  • Gagliardi, CA
  • Garand, D
  • Geurts, F
  • Gibson, A
  • Girard, M
  • Greiner, L
  • Grosnick, D
  • Gunarathne, DS
  • Guo, Y
  • Gupta, S
  • Gupta, A
  • Guryn, W
  • Hamad, AI
  • Hamed, A
  • Haque, R
  • Harris, JW
  • He, L
  • Heppelmann, S
  • Heppelmann, S
  • Hirsch, A
  • Hoffmann, GW
  • Horvat, S
  • Huang, T
  • Huang, B
  • Huang, X
  • Huang, HZ
  • et al.
Abstract

Azimuthal correlations of charged hadrons with direct-photon (γ ) and neutral-pion (π ) trigger particles are analyzed in central Au+Au and minimum-bias p+p collisions at s =200 GeV in the STAR experiment. The charged-hadron per-trigger yields at mid-rapidity from central Au+Au collisions are compared with p+p collisions to quantify the suppression in Au+Au collisions. The suppression of the away-side associated-particle yields per γ trigger is independent of the transverse momentum of the trigger particle (p ), whereas the suppression is smaller at low transverse momentum of the associated charged hadrons (p ). Within uncertainty, similar levels of suppression are observed for γ and π triggers as a function of z (≡p /p ). The results are compared with energy-loss-inspired theoretical model predictions. Our studies support previous conclusions that the lost energy reappears predominantly at low transverse momentum, regardless of the trigger energy. dir NN dir T T dir T T T 0 trig assoc 0 assoc trig

Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.

Main Content
Current View