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

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, w...

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Bibliographic Details
Main Authors: Aboona, Bassam (Author) , Deppner, Ingo Martin (Author) , Leung, Yue (Author) , Söhngen, Yannick (Author) , Weidenkaff, Philipp (Author)
Corporate Author: STAR Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 10 April 2023
In: Physics letters
Year: 2023, Volume: 839, Pages: 1-8
ISSN:1873-2445
DOI:10.1016/j.physletb.2023.137755
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1016/j.physletb.2023.137755
Verlag, kostenfrei, Volltext: https://www.sciencedirect.com/science/article/pii/S0370269323000898
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Author Notes:STAR Collaboration*
Description
Summary: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 ηs(T,μB).
Item Description:Online verfügbar: 14. Februar 2023, Artikelversion: 21. Februar 2023
*STAR Collaboration: B.E. Aboona, I.M. Deppner, Y.H. Leung, Y. Söhngen, P.C. Weidenkaff [und 352 weitere Personen]
Gesehen am 16.08.2023
Physical Description:Online Resource
ISSN:1873-2445
DOI:10.1016/j.physletb.2023.137755

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