Pseudo-rapidity distributions of charged particles in asymmetric collisions using Tsallis thermodynamics  

作　　者：Jun‑Qi Tao Hong‑Bin He Hua Zheng Wen‑Chao Zhang Xing‑Quan Liu Li‑Lin Zhu Aldo Bonasera 

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]School of Physics and Information Technology,Shaanxi Normal University,Xi’an 710119,China [3]Institute of Nuclear Science and Technology,Sichuan University,Chengdu 610064,China [4]Department of Physics,Sichuan University,Chengdu 610064,China [5]Cyclotron Institute,Texas A&M University,College Station,TX 77843,USA [6]Laboratori Nazionali del Sud,INFN,95123 Catania,Italy

出　　处：《Nuclear Science and Techniques》2023年第11期120-127,共8页核技术（英文）

基　　金：This work was supported in part by the National Natural Science Foundation of China(Nos.11905120,11947416);the Natural Science Foundation of Sichuan Province(No.2023NSFSC1322);the Natural Science Basic Research Plan in Shaanxi Province of China(No.2023-JC-YB-012);the United States Department of Energy(#DE-FG02-93ER40773);the NNSA(No.DENA0003841(CENTAUR)).

摘　　要：The pseudo-rapidity distributions of the charged particles produced in the asymmetric collision systems p+Al,p+Au and ^(3)He+Au at√S_(NN)=200 GeV GeV are evaluated in the framework of a fireball model with Tsallis thermodynamics.The fireball model assumes that the experimentally measured particles are produced by fireballs following the Tsallis distribution and it can effectively describe the experimental data.Our results as well as previous results for d+Au collisions at√S_(NN)=200 GeV GeV and p+Pb collisions at√S_(NN)=5.02 TeV TeV validate that the fireball model based on Tsallis thermodynamics can provide a universal framework for pseudo-rapidity distribution of the charged particles produced in asymmetric collision systems.We predict the centrality dependence of the total charged particle multiplicity in the p+Al,p+Au and 3He+Au collisions.Additionally,the dependences of the fireball model parameters(y_(0a),y_(0A),σ_(a) and σ_(A))on the centrality and system size are studied.

关 键 词：Tsallis thermodynamics Fireball model Pseudo-rapidity distribution Heavy-ion collisions Charged particles 

分 类 号：O414.1[理学—理论物理]