Universal scaling of kinetic freeze-out parameters across different collision systems at LHC energies  

作　　者：刘炼 殷中宝 郑亮 Lian Liu;Zhong-Bao Yin;Liang Zheng(School of Mathematics and Physics,China University of Geosciences(Wuhan),Wuhan 430074,China;Key Laboratory of Quark and Lepton Physics(MOE)and Institute of Particle Physics,Central China Normal University,Wuhan 430079,China)

机构地区：[1]School of Mathematics and Physics,China University of Geosciences(Wuhan),Wuhan 430074,China [2]Key Laboratory of Quark and Lepton Physics(MOE)and Institute of Particle Physics,Central China Normal University,Wuhan 430079,China

出　　处：《Chinese Physics C》2023年第2期129-143,共15页中国物理C（英文版）

基　　金：Supported by the National Natural Science Foundation of China (11905188, 11875143 and 12061141008);the National Key Research and Development Program of China (2016YFE0100900);the Innovation Fund of Key Laboratory of Quark and Lepton Physics LPL2020P01 (LZ)。

摘　　要：In this study,we perform Tsallis Blast-Wave analysis on the transverse momentum spectra of identified hadrons produced in a wide range of collision systems at the Large Hadron Collider(LHC) including pp,pPb,XeXe,and PbPb collisions.The kinetic freeze-out properties varying with event multiplicity are investigated across these systems.We find that the extracted kinetic freeze-out temperature,radial flow velocity,and non-extensive parameter exhibit a universal scaling behavior for these systems with very different geometric sizes,especially when the independent baryon Tsallis non-extensive parameter is considered.This universality may indicate the existence of a unified partonic evolution stage in different collision systems at the LHC energies.

关 键 词：Blast-Wave model Tsallis statistics transverse momentum spectra small system 

分 类 号：O572.214[理学—粒子物理与原子核物理]