Beam energy dependence of the linear and mode-coupled flow harmonics in Au+Au collisions

STAR Collaboration

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)

摘要

The linear and mode-coupled contributions to higher-order anisotropic flow are presented for Au+Au collisions at sNN = 27, 39, 54.4, and 200 GeV and compared to similar measurements for Pb+Pb collisions at the Large Hadron Collider (LHC). The coefficients and the flow harmonics' correlations, which characterize the linear and mode-coupled response to the lower-order anisotropies, indicate a beam energy dependence consistent with an influence from the specific shear viscosity (η/s). In contrast, the dimensionless coefficients, mode-coupled response coefficients, and normalized symmetric cumulants are approximately beam-energy independent, consistent with a significant role from initial-state effects. These measurements could provide unique supplemental constraints to (i) distinguish between different initial-state models and (ii) delineate the temperature (T) and baryon chemical potential (μB) dependence of the specific shear viscosity [Formula presented].

原文English
文章編號137755
期刊Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
839
DOIs
出版狀態Published - 2023 4月 10

All Science Journal Classification (ASJC) codes

  • 核能與高能物理

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