^(7)Be+^(9)Be碰撞中所产生可识别粒子的横动量谱和快度谱分析  

Analysis of Transverse Momentum Spectra and Rapidity Spectra of Identifiable Particles Produced in ^(7)Be+^(9)Be Collisions

作　　者：王诗文 王二琴 高丽娜 WANG Shiwen;WANG Erqin;GAO Lin(College of Computer Science and Technology,Taiyuan Normal University,Jinzhong Shanxi 030619,China;Department of Physics,Taiyuan Normal University,Jinzhong Shanxi 030619,China)

机构地区：[1]太原师范学院计算机科学与技术学院,山西晋中030619 [2]太原师范学院物理系,山西晋中030619

出　　处：《太原师范学院学报（自然科学版）》2024年第2期42-52,共11页Journal of Taiyuan Normal University:Natural Science Edition

基　　金：太原师范学院大学生创新创业项目(CXCY2276)。

摘　　要：基于多源热模型和朗道四分量模型,并借助于蒙特卡洛方法分析了Be+Be在束流动量分别为19 A、30 A、40 A、75 A和150 A GeV/c下所产生可识别粒子π^(±),K^(±),p和p的横动量分布和快度分布.由理论计算结果和实验数据的对比,可以看出理论较好地描述了实验变化趋势,从而说明多源热模型分析由Be+Be在不同束流动量的碰撞系统中所产生末态粒子分布的可行性.Based on the multi-source thermal model and Landau four-component model,the transverse momentum distributions and rapidity distributions of identifiable particles π^(±),K^(±),p and p produced by Be+Be at the beam momentum of 19 A,30 A,40 A,75 A and 150 A Gev/c were ana-lyzed by Monte Carlo method,respectively.By contrast of the theoretical calculations and experimen-tal data,the experimental variation trend could be described well by the theory.Therefore,it indicated that the distribution of final-state particles produced in Be+Be collisions system at different beam mo-menta analyzed by the multi-source thermal model was feasible.

关 键 词：横动量分布 快度 末态粒子 四分量朗道模型 高能碰撞 

分 类 号：O572.2[理学—粒子物理与原子核物理]