Varying the chiral magnetic effect relative to flow in a single nucleus-nucleus collision  

作　　者：徐浩洁 赵杰 王小保 李汉林 林子威 沈彩万 王福强 

机构地区：[1]School of Science,Huzhou University [2]Department of Physics and Astronomy,Purdue University,West Lafayette [3]College of Science,Wuhan University of Science and Technology [4]Department of Physics,East Carolina University [5]Key Laboratory of Quarks and Lepton Physics (MOE) and Institute of Particle Physics,Central China Normal University [6]Department of Physics and Astronomy,Purdue University

出　　处：《Chinese Physics C》2018年第8期130-136,共7页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China(11647306,11747312,U1732138,11505056,11605054,11628508);US Department of Energy(DE-SC0012910)

摘　　要：We propose a novel method to search for the chiral magnetic effect（cme） in heavy ion collisions.We argue that the relative strength of the magnetic field（mainly from spectator protons and responsible for the cme）with respect to the reaction plane and the participant plane is opposite to that of the elliptic flow background arising from the fluctuating participant geometry.This opposite behavior in a single collision system,hence with small systematic uncertainties,can be exploited to extract the possible cme signal from the flow background.The method is applied to existing data from rhic,and the outcome discussed.We propose a novel method to search for the chiral magnetic effect（cme） in heavy ion collisions.We argue that the relative strength of the magnetic field（mainly from spectator protons and responsible for the cme）with respect to the reaction plane and the participant plane is opposite to that of the elliptic flow background arising from the fluctuating participant geometry.This opposite behavior in a single collision system,hence with small systematic uncertainties,can be exploited to extract the possible cme signal from the flow background.The method is applied to existing data from rhic,and the outcome discussed.

关 键 词：heavy ion collision chiral magnetic effect charge separation reaction plane participant plane eventplane 

分 类 号：O4[理学—物理]