| 高能重离子碰撞中末态粒子分布的非对称性 |
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| 引用本文： | 霍雷,刘亦铭,张卫宁,D.Keane,H.Liu.高能重离子碰撞中末态粒子分布的非对称性[J].中国物理 C,1996,20(9):812-818. |
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| 作者姓名： | 霍雷 刘亦铭 张卫宁 D.Keane H.Liu |
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| 作者单位： | 哈尔滨工业大学物理系 |
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| 基金项目： | 国家自然科学基金,美国国家科学基金,高等学校博士点专项基金 |
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| 摘 要： | 对Bevalac1.2A GeV Au+Au碰撞实验,根据以流方向为z轴的质心坐标系中末态粒子方位角分布的非对称性为极小的条件,确定了事件中五种质量范围(A=1,2,3,4,5-8)末态粒子的集合侧向流流角.在以流方向为z轴的质心坐标系中研究了不同质量末态粒子极角分布,结果表明质量越大的粒子在流方向分布得越集中,侧向流的“流”值越大.
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| 关 键 词： | 质量数 侧向流 流角 “流”(flow) |
Anisotropic Distribution of Final State Particles in High Energy Heavy Ion Collisions |
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| Huo Lei,Liu Yiming,Zhang Weining.Anisotropic Distribution of Final State Particles in High Energy Heavy Ion Collisions[J].High Energy Physics and Nuclear Physics,1996,20(9):812-818. |
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| Authors: | Huo Lei Liu Yiming Zhang Weining |
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| Abstract: | The flow angles for the final state particles with five kind of mass number(A=1,2,3,4 and 5-8)are determined for 1.2 A GeV An+Au collisions at the Bevalac by minimizing the azimuthal anisotropy in the center-of-mass coordinde systems where the z axis is rotated to various polar angles in the reaction plane.The study of the polar angle distributions for the final state particles with different mass in the systems with the z axis rotated to the flow angles indicates that the degree of concentration around the flow direction and the now value increase with increasing mass number of the particles. |
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| Keywords: | mass number sideward flow flow angle flow |
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