Anisotropic flow in high baryon density region

被引：32

作者：

Shao-Wei Lan ^{[1
,2
]}

Shu-Su Shi ^{[1
,2
]}

机构：

[1] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China

[2] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China

来源：

NUCLEAR SCIENCE AND TECHNIQUES | 2022年 / 33卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Heavy-ion collisions; QCD phase diagram; UrQMD; Collective flow; Mean-field potential; EQUATION-OF-STATE; NUCLEAR-EQUATION; ELLIPTIC FLOW; COLLISIONS; SIGNATURE;

D O I：

10.1007/s41365-022-01006-0

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Collective flow is a powerful tool used to analyze the properties of a medium created during high-energy nuclear collisions. Here, we report a systematic study of the first two Fourier coefficients nu(1) and nu(2) of the proton and pi(+) from Au+Au collisions in the energy range root S-NN = 2.11-4.9 GeV within the framework of a hadronic transport model (UrQMD). Recent results from the STAR experiment were used to test the model calculations. A mean-field mode with strong repulsive interaction is needed to reproduce the 10-40% data at 3 GeV. This implies that hadronic interactions play an important role in the collective flow development in the high baryon density region. The mean values of the freeze-out time for protons and pi(+) are shifted earlier owing to the additional repulsive interactions. We predict the energy dependence of the mean values of the transverse momentum < P-T >, nu(1), and nu(2) for both protons and pi(+) from the Au+Au collisions.

引用

页数：8

共 51 条

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