Isospin splitting of pion elliptic flow in relativistic heavy-ion collisions

被引：15

作者：

Liu, He ^{[1
,2
,3
]}

Wang, Feng-Tao ^{[1
,2
]}

Sun, Kai-Jia ^{[3
]}

Xu, Jun ^{[1
,4
]}

Ko, Che Ming ^{[3
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Texas A&M Univ, Cyclotron Inst, College Stn, TX 77843 USA

[4] Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai 201210, Peoples R China

来源：

PHYSICS LETTERS B | 2019年 / 798卷

基金：

中国国家自然科学基金;

关键词：

MATTER;

D O I：

10.1016/j.physletb.2019.135002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Based on the framework of an extended multiphase transport model with mean-field potentials in both the partonic phase and the hadronic phase, we explain the elliptic flow difference between pi(+) and pi(-) in the beam-energy scan program at the relativistic heavy-ion collider by incorporating the vector-isovector potential for quarks and antiquarks with different flavors or isospins. It is found that the isospin splitting of pion elliptic flow favors a strong vector-isovector interaction, and thus serves as a probe of the quark matter equation of state as well as the QCD phase structure at finite baryon and isospin chemical potentials. (C) 2019 The Author(s). Published by Elsevier B.V.

引用

页数：5

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