相对论重离子碰撞的三源模型

相对论重离子碰撞的三源模型 Three-Source Model of Relativistic Heavy-Ion Collisions 冯笙琴 FENG Shengqin1 1 2 3 4 first-author 熊伟 XIONG Wei1 1 2 3 4 三峡大学理学院 三峡大学理学院 College of Science, China Three Gorges University College of Science, China Three Gorges University 三峡大学理学院,湖北,宜昌,443002 三峡大学理学院,湖北,宜昌,443002 School of Physics and Technology, Wuhan University School of Physics and Technology, Wuhan University 武汉大学物理科学与技术学院 武汉大学物理科学与技术学院 ,湖北,武汉,430072 ,湖北,武汉,430072 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 distributions. The results extracted from this three source model are in good agreement with the experimental data at RHIC energy region. 集体流 RHIC能区 局部平衡 collective flow relativistic heavy ion collision（RHIC） energy region local equilibrium O572.2 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） 2008-01-01 2021-04-01 1