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Event-plane-dependent dihadron correlations with harmonic vn subtraction in Au + Au collisions at s NN =200 GeV

  • Author(s): Agakishiev, H
  • Aggarwal, MM
  • Ahammed, Z
  • Alakhverdyants, AV
  • Alekseev, I
  • Alford, J
  • Anderson, BD
  • Anson, CD
  • Arkhipkin, D
  • Averichev, GS
  • Balewski, J
  • Beavis, DR
  • Behera, NK
  • Bellwied, R
  • Betancourt, MJ
  • Betts, RR
  • Bhasin, A
  • Bhati, AK
  • Bichsel, H
  • Bielcik, J
  • Bielcikova, J
  • Biritz, B
  • Bland, LC
  • Borowski, W
  • Bouchet, J
  • Braidot, E
  • Brandin, AV
  • Bridgeman, A
  • Brovko, SG
  • Bruna, E
  • Bueltmann, S
  • Bunzarov, I
  • Burton, TP
  • Cai, XZ
  • Caines, H
  • De La Barca Sánchez, MC
  • Cebra, D
  • Cendejas, R
  • Cervantes, MC
  • Chajecki, Z
  • Chaloupka, P
  • Chattopadhyay, S
  • Chen, HF
  • Chen, JH
  • Chen, JY
  • Chen, L
  • Cheng, J
  • Cherney, M
  • Chikanian, A
  • Choi, KE
  • Christie, W
  • Chung, P
  • Codrington, MJM
  • Corliss, R
  • Cramer, JG
  • Crawford, HJ
  • Dash, S
  • Leyva, AD
  • De Silva, LC
  • Debbe, RR
  • Dedovich, TG
  • Derevschikov, AA
  • De Souza, RD
  • Didenko, L
  • Djawotho, P
  • Dogra, SM
  • Dong, X
  • Drachenberg, JL
  • Draper, JE
  • Dunlop, JC
  • Efimov, LG
  • Elnimr, M
  • Engelage, J
  • Eppley, G
  • Estienne, M
  • Eun, L
  • Evdokimov, O
  • Fatemi, R
  • Fedorisin, J
  • Feng, A
  • Fersch, RG
  • Filip, P
  • Finch, E
  • Fine, V
  • Fisyak, Y
  • Gagliardi, CA
  • Gangadharan, DR
  • Geromitsos, A
  • Geurts, F
  • Ghosh, P
  • Gorbunov, YN
  • Gordon, A
  • Grebenyuk, O
  • Grosnick, D
  • Guertin, SM
  • Gupta, A
  • Guryn, W
  • Haag, B
  • Hajkova, O
  • Hamed, A
  • et al.

Published Web Location

http://journals.aps.org/prc/pdf/10.1103/PhysRevC.89.041901
No data is associated with this publication.
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Public License
Abstract

STAR measurements of dihadron azimuthal correlations (Δφ) are reported in midcentral (20-60%) Au+Au collisions at sNN=200 GeV as a function of the trigger particle's azimuthal angle relative to the event plane, φs=|φt-ψEP|. The elliptic (v2), triangular (v3), and quadratic (v4) flow harmonic backgrounds are subtracted using the zero yield at minimum (ZYAM) method. The results are compared to minimum-bias d+Au collisions. It is found that a finite near-side (|Δφ|<π/2) long-range pseudorapidity correlation (ridge) is present in the in-plane direction (φs∼0). The away-side (|Δφ|>π/2) correlation shows a modification from d+Au data, varying with φs. The modification may be a consequence of path-length-dependent jet quenching and may lead to a better understanding of high-density QCD. © 2014 American Physical Society.

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