Flow Effects on Jet Energy Loss with Detailed Balance

Luan Cheng; Jia Liu; Enke Wang

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Flow Effects on Jet Energy Loss with Detailed Balance

Luan Cheng 1 * #,Jia Liu 2,Enke Wang 3

1.Institute of Theoretical Physics, Dalian University of Technology, Dalian 116024;Institute of Particle Physics, Central China Normal University, Wuhan 430079;Key Laboratory of Quark & Lepton Physics (Central China Normal University), Ministry of Education, Wuhan 430079

2.Institute of Particle Physics, Central China Normal University, Wuhan 430079;Key Laboratory of Quark & Lepton Physics (Central China Normal University), Ministry of Education, Wuhan 430079;Department of Physics, The Ohio State University, Columbus, OH 43214

3.Institute of Particle Physics, Central China Normal University, Wuhan 430079;Key Laboratory of Quark & Lepton Physics (Central China Normal University), Ministry of Education, Wuhan 430079

*Correspondence author

#Submitted by

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Funding: NSFC of China （No.11205024）, Ministry of Education of Chinaunder the Doctoral Grants （No.20120041120043）

Opened online:22 December 2014

Accepted by: none

Citation: Luan Cheng,Jia Liu,Enke Wang.Flow Effects on Jet Energy Loss with Detailed Balance[OL]. [22 December 2014] http://en.paper.edu.cn/en_releasepaper/content/4623811

In the presence of collective flow a new model potential describingthe interaction of the hard jet with scattering centers is derivedbased on the static color-screened Yukawa potential. The flow effecton jet quenching with detailed balance is investigated in pQCD. Itturns out, considering the collective flow with velocity vz along the jetdirection, the collective flow decreases the LPM destructiveinterference comparing to that in the static medium. The gluonabsorption plays a more important role in the moving medium. The collective flow increases the energy gain from gluon absorption, however,decreases the energy loss from gluon radiation, which is (1-vz) times asthat in the static medium to the first order of opacity. In the presence of collective flow,the second order in opacity correction is relatively small compared to the first order. So that thetotal effective energy loss is decreased. The flow dependence of theenergy loss will affect the suppression of high pT hadronspectrum and anisotropy parameter v2 in high-energy heavy-ioncollisions.

Keywords:Jet Quenching; Collective Flow; Quark-Gluon-Plasma

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