Charged Hadron Multiplicity at RHIC and LHC Energies from Color Glass Condensate  

作　　者：XIANG Wen-Chang ZHANG Jun-Jie CHEN Shi-Guo LIU Wan-Song ZHOU Dai-Cui 向文昌;张俊杰;陈世国;刘万松;周代翠(College of Physics and Electronics Science,Guizhou Normal University,Guiyang 550001;Institute of Particle Physics,Huazhong Normal University,Wuhan 430079)

机构地区：[1]College of Physics and Electronics Science,Guizhou Normal University,Guiyang 550001 [2]Institute of Particle Physics,Huazhong Normal University,Wuhan 430079

出　　处：《Chinese Physics Letters》2013年第8期46-49,共4页中国物理快报（英文版）

基　　金：Supported by the Guizhou Normal University Doctoral Research Fund,Guizhou Science Foundation(Grant No J-LKS[2009]15,J[2010]2145 and J[2013]2217);the National Natural Science Foundation of China under Grant Nos 11020101060 and 10635020,the CCNU2011(Key Project);the Program of Introducing Talents of Discipline to Universities of China(B08033)。

摘　　要：We investigate charged hadron production at RHIC and LHC energies in the framework of color glass condensate.Our study gives a very good description of the experimental data of inclusive charged hadron production in proton–proton collisions at both RHIC and LHC energies.The saturation scale is treated as a free parameter,which will reduce the uncertainties from fitting low-energy experimental data and the modeling of the saturation momentum.We find a reasonable value of the saturation scale Q_(s)~1 GeV,which is consistent with the theoretical findings.The running coupling effect is taken into account,and it is found that it plays an important role in the description of the experimental data.We provide quantitative predictions of the rapidity dependence of the inclusive charged hadron production for the upcoming LHC experiment in proton–proton collisions at√s=14 TeV.

关 键 词：saturation INCLUSIVE finding 

分 类 号：O57[理学—粒子物理与原子核物理]