? 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

页码：75 / 81

页数：7

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