Strange particle production in relativistic nucleus-nucleus collisions at RHIC and LHC energy regions  

作　　者：任小文 冯笙琴 袁显宝 

机构地区：[1]College of Science,China Three Gorges University [2]Key Laboratory of Quark and Lepton Physics(Huazhong Normal University)Ministry of Education [3]School of Physics and Technology,Wuhan University

出　　处：《Chinese Physics C》2014年第5期28-32,共5页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China(11247021,10975091);Excellent Youth Foundation of Hubei Scientific Committee(2006ABB036);Key Laboratory Foundation of Quark and Lepton Physics(Hua-Zhong Normal University)(QLPL201101)

摘　　要：PACIAE, a parton and hadron cascade model, is utilized to systematically investigate strange particle production and strangeness enhancement in Au＋Au collisions and in Pb＋Pb collisions with the √SNN = 200 GeV at the RHIC and 2.76 TeV at the LHC, respectively. The experimental results at different centralities, using data from the STAR collaboration and the ALICE collaboration, are well described by the PACIAE model. This may represent the importance of the parton and hadron rescatterings, as well as the reduction mechanism for strange quark suppression, that are implemented in the PACIAE model.PACIAE, a parton and hadron cascade model, is utilized to systematically investigate strange particle production and strangeness enhancement in Au＋Au collisions and in Pb＋Pb collisions with the √SNN = 200 GeV at the RHIC and 2.76 TeV at the LHC, respectively. The experimental results at different centralities, using data from the STAR collaboration and the ALICE collaboration, are well described by the PACIAE model. This may represent the importance of the parton and hadron rescatterings, as well as the reduction mechanism for strange quark suppression, that are implemented in the PACIAE model.

关 键 词：strange particle rapidity densities at midrapidity transverse momentum distribution PACIAE model 

分 类 号：O572.2[理学—粒子物理与原子核物理]