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

DataBETA

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

STAR

Collaboration

•

Bassam Aboona
(
- Texas A-M
)

Nov 21, 2022

8 pages

Published in:

Phys.Lett.B 839 (2023) 137755

Published: Apr 10, 2023

e-Print:

2211.11637 [nucl-ex]

DOI:

10.1016/j.physletb.2023.137755 (publication)

Experiments:

BNL-RHIC-STAR

View in:

ADS Abstract Service

reference search9 citations

Citations per year

Abstract: (Elsevier B.V.)

The linear and mode-coupled contributions to higher-order anisotropic flow are presented for Au+Au collisions at

\sqrt{s_{N N}}

= 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 (

μ_{B}

) dependence of the specific shear viscosity

\frac{η}{s} (T, μ_{B})

.

Note:

11 pages, 4 figures

Collectivity
Correlation
Shear viscosity
flow: anisotropy
potential: chemical
temperature dependence
experimental results
correlation
shear viscosity
25.75.-Ld

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Figures(4)

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