Anisotropic flow in high baryon density region

Shao-Wei Lan; Shu-Su Shi

doi:10.1007/s41365-022-01006-0

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Anisotropic flow in high baryon density region

NUCLEAR PHYSICS AND INTERDISCIPLINARY RESEARCH | Updated：2022-03-18

- Anisotropic flow in high baryon density region
  Cover Article Enhanced Publication
- Nuclear Science and Techniques Vol. 33, Issue 2, Article number: 21(2022)
- Affiliations：
  
  1.Key Laboratory of Quark & Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University, Wuhan 430079, China
- Author bio：
  
  shaoweilan@mails.ccnu.edu.cn
  shiss@mail.ccnu.edu.cn
- Funds：
- DOI：10.1007/s41365-022-01006-0
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Shao-Wei Lan, Shu-Su Shi. Anisotropic flow in high baryon density region. [J]. Nuclear Science and Techniques 33(2):21(2022)
DOI：

Shao-Wei Lan, Shu-Su Shi. Anisotropic flow in high baryon density region. [J]. Nuclear Science and Techniques 33(2):21(2022) DOI： 10.1007/s41365-022-01006-0.

摘要

Abstract

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 ,v,1, and ,v,2, of the proton and ,π,+, from Au+Au collisions in the energy range , $\sqrt{s_{NN}}$ , = 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 ,π,+, are shifted earlier owing to the additional repulsive interactions. We predict the energy dependence of the mean values of the transverse momentum , $〈 p_{T} 〉$ ,v,1, and ,v,2, for both protons and ,π,+, from the Au+Au collisions.

关键词

Keywords

Heavy-ion collisionsQCD phase diagramUrQMDCollective flowMean-field potential

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Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University

State Key Laboratory of Quantum Optics and Quantum Optics Devices & Collaborative Innovation Center of Extreme Optics, Institute of Theoretical Physics, Shanxi University

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School of Nuclear Science and Technology, Lanzhou University

Institut für Theoretische Physik, Goethe Universität Frankfurt

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