相对论重离子碰撞的三源模型  

Three-Source Model of Relativistic Heavy-Ion Collisions

作　　者：冯笙琴[1] 熊伟[1] 

机构地区：[1]三峡大学理学院

出　　处：《武汉大学学报（理学版）》2008年第1期33-36,共4页Journal of Wuhan University:Natural Science Edition

基　　金：湖北省自然科学基金项目(2006ABB036);湖北省教育厅重大科研项目(2003Z002);三峡大学重大科研项目(2003C02)

摘　　要：理论分析发现能解释较低碰撞能区带电强子分布的Heinz集体流模型无法解释较高碰撞能量的相对论对撞机(RHIC)能区的带电强子分布.为此在Heinz集体流模型的基础上,创建了三源模型.本模型将强子分布看成为射弹发射源、靶发射源和中心集体流三者贡献之和,其计算结果与RHIC能区的带电强子分布实验数据能较好地符合,能解释RHIC能区的带电强子分布特征.It is found that relativistic collective expansion flow model fail to analyze the charged-hadron distribution at RHIC in this paper. Three-source model is introduced,which idea is that the components of the projectile,target emitting source and central collective flow all contribute to the charged-hadron distri- butions. The results extracted from this three source model are in good agreement with the experimental data at RHIC energy region.

关 键 词：集体流 RHIC能区 局部平衡 

分 类 号：O572[理学—粒子物理与原子核物理]