摘要
利用Glauber模型,计算出核-核碰撞中的参与者数、旁观者数及二元核子-核子碰撞数.考虑到能量损失和旁观者效应对末态带电粒子赝快度分布的影响,通过对核子-核子碰撞快度分布的逐次叠加得到核-核碰撞末态带电粒子的赝快度分布.并用其讨论了PHOBOS合作组在高能Au+Au碰撞所做的实验测量.理论与实验结果符合得很好.
Using the Glauber model,the numbers of participants,spectators and as well as the number of binary nucleon-nucleon collisions were calculated in high-energy heavy-ion collisions.The pseudorapidity distributions of charged particles in nucleus-nucleus collisions was obtained by repeated addition of the rapidity distribution of nucleon-nucleon collision with consideration of the effect of energy loss and spectator particle influence.The theoretical results agree well with those of the experimental measurements of Au＋Au collisions at high energy level carried out by PHOBOS Collaboration.
出处
《上海理工大学学报》
CAS
北大核心
2009年第4期322-326,共5页
Journal of University of Shanghai For Science and Technology
基金
上海市重点学科建设资助项目(530501)
关键词
GLAUBER模型
赝快度分布
二元核子-核子碰撞数
旁观者数
Glauber model
pseudorapidity distribution
the number of binary nucleon-nucleon collisions
the number of spectators
作者简介
王增伟（1981-），男，硕士研究生．E-mail：wzwei@126．com
