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Beam energy dependence of the linear and mode-coupled flow harmonics in Au+Au collisions
- Source :
- Physics Letters B, Vol 839, Iss , Pp 137755- (2023)
- Publication Year :
- 2023
- Publisher :
- Elsevier, 2023.
-
Abstract
- 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).
- Subjects :
- Collectivity
Correlation
Shear viscosity
Physics
QC1-999
Subjects
Details
- Language :
- English
- ISSN :
- 03702693
- Volume :
- 839
- Issue :
- 137755-
- Database :
- Directory of Open Access Journals
- Journal :
- Physics Letters B
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.b61070604dfc85fa2afbe2fddf7f
- Document Type :
- article
- Full Text :
- https://doi.org/10.1016/j.physletb.2023.137755