A Non-Zero Hadronic Elliptic Flow with a Vanished Partonic Elliptic Flow in a Coalescence Scenario  

作　　者：刘剑利 单连强 冯启春 吴凤娟 张景波 唐生新 霍雷 

机构地区：[1]Department of Physics, Harbin Institute of Technology, Harbin 150001

出　　处：《Chinese Physics Letters》2009年第7期89-92,共4页中国物理快报（英文版）

摘　　要：The elliptic flow of a hadron is calculated using a quark coalescence model based on the quark phase space distribution produced by a free streaming locally thermalized quark in a two-dimensional transverse plane at initial time. Without assuming the quark＇s elliptic flow, it is shown that the hadron obtains a non-zero elliptic flow in this model. The elliptic flow of the hadron is shown to be sensitive to both space momentum correlation and the hadron＇s internal structure. Quark number scaling is obtained only for some special cases.The elliptic flow of a hadron is calculated using a quark coalescence model based on the quark phase space distribution produced by a free streaming locally thermalized quark in a two-dimensional transverse plane at initial time. Without assuming the quark＇s elliptic flow, it is shown that the hadron obtains a non-zero elliptic flow in this model. The elliptic flow of the hadron is shown to be sensitive to both space momentum correlation and the hadron＇s internal structure. Quark number scaling is obtained only for some special cases.

关 键 词：Nuclear physics 

分 类 号：O572.2[理学—粒子物理与原子核物理] TE932[理学—物理]