? and φ in Au + Au collisions at (sNN)1/2= 200 and 11.5 GeV from a multiphase transport model

被引：1
|
作者：
叶永金 [1 ,2 ]
陈金辉 [1 ]
马余刚 [1 ,3 ]
张松 [1 ]
钟晨 [1 ]
机构：
[1] Shanghai Institute of Applied Physics, Chinese Academy of Sciences
[2] University of Chinese Academy of Sciences
[3] Shanghai Tech. University
来源：
Chinese Physics C | 2017年 / 41卷 / 08期
基金：
中国国家自然科学基金;
关键词：
multi-strangeness particles; AMPT; RHIC;
D O I：
暂无
中图分类号：
O572.2 [粒子物理学];
学科分类号：
070202 ;
摘要：
Within the framework of a multiphase transport model, we study the production and properties of ? andφ in Au + Au collisions with a new set of parameters for (sNN)1/2= 200 GeV and with the original set of parameters for (sNN)1/2= 11.5 GeV. The AMPT model with string melting provides a reasonable description at (sNN)1/2= 200 GeV,while the default AMPT model describes the data well at (sNN)1/2= 11.5 GeV. This indicates that the system created at top RHIC energy is dominated by partonic interactions, while hadronic interactions become important at lower beam energy, such as (sNN)1/2= 11.5 GeV. The comparison of N(?++?-)/[2N(φ)] ratio between data and calculations further supports the argument. Our calculations can generally describe the data of nuclear modification factor as well as elliptic flow.
引用
收藏
页码：75 / 81
页数：7
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