Hadronic Transport Effects on Elliptic Flow  

作　　者：LI Na SHI Shu-Su 李娜;施梳苏(Department of Physics,Huazhong University of Science and Technology,Wuhan 430074;Institute of Particle Physics,Central China Normal University,Wuhan 430079;The Key Laboratory of Quark and Lepton Physics(Ministry of Education),Cental China Normal University,Wuhan 430079)

机构地区：[1]Department of Physics,Huazhong University of Science and Technology,Wuhan 430074 [2]Institute of Particle Physics,Central China Normal University,Wuhan 430079 [3]The Key Laboratory of Quark and Lepton Physics(Ministry of Education),Cental China Normal University,Wuhan 430079

出　　处：《Chinese Physics Letters》2011年第12期100-103,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 11105060;the Fundamental Research Funds for the Central Universities under Grant No HUST 2011QN195.

摘　　要：Elliptic flow v2 is considered as a probe to study partonic collectivity,and the measurement v2/εcan be used to describe the hydro behavior of the colliding system.We study the the effect of the hadronic process on the momentum anisotropy parameter v2 in a multiphase transport model.It is found that hadronic rescattering will depress the v2 signal built up at the partonic phase.A similar mass hierarchy is observed in the model as in the experiment at RHIC.We find that different particle species will approach the same ideal hydro limit if the hadronic process is excluded.

关 键 词：ELLIPTIC HADRON MOMENTUM 

分 类 号：O57[理学—粒子物理与原子核物理]