Rapidity dependence of global polarization in heavy ion collisions  

作　　者：Zuo-Tang Liang Jun Song Isaac Upsal Qun Wang Zhangbu Xu 梁作堂;宋军;Isaac Upsal;王群;许长补(Institute of Frontier and Interdisciplinary Science,Key Laboratory of Particle Physics and Particle Irradiation(MOE),Shandong University,Qingdao 266237,China;Department of Physics,Jining University,Shandong 273155,China;Physics Department,Brookhaven National Laboratory,Upton,New York 11973,USA;Department of Modern Physics,University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]Institute of Frontier and Interdisciplinary Science,Key Laboratory of Particle Physics and Particle Irradiation(MOE),Shandong University,Qingdao 266237,China [2]Department of Physics,Jining University,Shandong 273155,China [3]Physics Department,Brookhaven National Laboratory,Upton,New York 11973,USA [4]Department of Modem Physics,University of Science and Technology of China,Hefei 230026,China

出　　处：《Chinese Physics C》2021年第1期226-238,共13页中国物理C（英文版）

基　　金：ZTL and QW are supported in part by the National Natural Science Foundation of China(NSFC)(11890713,11535012);JS is sup ported in part by Shandong Province Natural Science Foundation(ZR2019YQ06)。

摘　　要：We use a geometric model for hadron polarization in heavy ion collisions with an emphasis on the rapidity dependence.The model is based on the model of Brodsky,Gunion,and Kuhn,as well as the Bjorken scaling model.We make predictions regarding the rapidity dependence of global Λ polarization in the collision energy range of 7.7-200 GeV by assuming the rapidity dependence of two parameters,κ and <ρτ>. The predictions can be tested by future beam-energy-scan experiments at the Relativistic Heavy Ion Collider of Brookhaven National Lab.

关 键 词：POLARIZATION orbital angular momentum relativistic heavy-ion collisions 

分 类 号：O571.6[理学—粒子物理与原子核物理]