山西大学学报（自然科学版）2024，Vol.47Issue(1)：179-186,8.DOI:10.13451/j.sxu.ns.2023048
高能重离子碰撞中带电粒子分布性质的研究
Reserch on the Distribution Properties of Charged Particles in High-energy Heavy Ion Collisions
摘要
Abstract
In this paper,charged-particle spectra in high-energy heavy ion collisions are analyzed by an improved participant quark model,and the properties reflected in the system are analyzed.Based on the comparative analysis of Au + Au,Cu + Cu,Pb + Pb and Xe + Xe collisions with multiple collision energies,the modified model can effectively construct the scaling characteristics of the transverse momentum spectra of charged particles with different collision centralities in the experiment,and calculate the system temperature T,entropy index related n and revised index a0.It is discovered that in most instances,the n of the central collisions are even larger than those of the edge,and the value of a0 is not equal to 1 and does not change in obviously different collision centrali-ties.Moreover,the analysis reveals that the temperature is positively related to the collision centrality and the non-equilibrium de-gree of the collision system increases with the collision energy.These properties are significant references for understanding of the process of high-energy nuclear collisions and the generation of charged particles.关键词
高能重离子碰撞/粒子分布性质/参与者夸克模型/碰撞过程Key words
high-energy heavy ion collision/particle distribution properties/participant quark model/process of high-energy colli-sions分类
数理科学引用本文复制引用
王佳琪,李保春..高能重离子碰撞中带电粒子分布性质的研究[J].山西大学学报（自然科学版）,2024,47(1):179-186,8.基金项目
国家自然科学基金(11575103) （11575103）
山西省自然科学基金(202103021224036) （202103021224036）
