Efficiency corrections for mutually inclusive variables and particle identification effect for mixed-cumulants in heavy-ion collisions  

作　　者：Arghya Chatterjee Toshihiro Nonaka ShinIchi Esumi Xiaofeng Luo Arghya Chatterjee;Toshihiro Nonaka;ShinIchi Esumi;罗晓峰(Key Laboratory of Quark&Lepton Physics(MOE)and Institute of Particle Physics,Central China Normal University,Wuhan 430079,China;Tomonaga Center for the History of the Universe,University of Tsukuba,Ibaraki 305,Japan)

机构地区：[1]Key Laboratory of Quark&Lepton Physics(MOE)and Institute of Particle Physics,Central China Normal University,Wuhan 430079,China [2]Tomonaga Center for the History of the Universe,University of Tsukuba,Ibaraki 305,Japan

出　　处：《Chinese Physics C》2021年第10期58-68,共11页中国物理C（英文版）

基　　金：Supported by the National Key Research and Development Program of China(2020YFE0202002,2018YFE0205201);the National Natural Science Foundation of China(12122505,11890711,11861131009);Ito Science Foundation and JSPS KAKENHI(25105504,19H05598)。

摘　　要：Mix-cumulants of conserved charge distributions are sensitive observables for probing properties of the QCD medium and phase transition in heavy-ion collisions.To perform precise measurements,efficiency correction is one of the most important step.In this study,using the binomial efficiency model,we derive efficiency correction formulas for mutually exclusive and inclusive variables.The UrQMD model is applied to verify the validity of these formulas for different types of correlations.Furthermore,we investigate the effect of the multiplicity loss and contamination emerging from the particle identifications.This study provides important steps toward future measurements of mixed-cumulants in relativistic heavy-ion collisions.

关 键 词：QCD critical point heavy-ion collisions quark-gluon plasma fluctuations and correlations 

分 类 号：O571.6[理学—粒子物理与原子核物理]