π-J/ψ correlation and elliptic flow parameter v_2 of charmed mesons at RHIC energy  

作　　者：彭茹 杨纯斌 

机构地区：[1]Institute of Particle Physics, Hua-zhong Normal University [2]Key Laboratory of Quark and Lepton (Hua-zhong Normal University) [3]College of Science, Wuhan University of Science and Technology

出　　处：《Chinese Physics C》2011年第5期453-458,共6页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China (10635020, 10775057);Ministry of Education of China (306022);Project IRT0624 and Programme of Introducing Talents of Discipline to Universities (B08033)

摘　　要：We study the correlation between the trigger π and the associated J/ψ on near and away sides in Au＋Au collisions at sNN^（1/2） = 200 GeV. In the region of trigger momentum pt 〉 4 GeV/c, the π spectrum is composed of thermal-shower and shower-shower recombinations in the frame work of the recombination model. We consider the azimuthal anisotropy in the quenched hard parton distribution and then calculate the elliptic flow parameter v2 of charmed mesons （J/ψ, D0 and Ds） for different centralities.We study the correlation between the trigger π and the associated J/ψ on near and away sides in Au＋Au collisions at sNN^（1/2） = 200 GeV. In the region of trigger momentum pt 〉 4 GeV/c, the π spectrum is composed of thermal-shower and shower-shower recombinations in the frame work of the recombination model. We consider the azimuthal anisotropy in the quenched hard parton distribution and then calculate the elliptic flow parameter v2 of charmed mesons （J/ψ, D0 and Ds） for different centralities.

关 键 词：recombination model di-hadron correlation elliptic flow parameter charmed meson 

分 类 号：O572.33[理学—粒子物理与原子核物理]