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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| Hauptverfasser: | , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
10 April 2023
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| In: |
Physics letters
Year: 2023, Jahrgang: 839, Pages: 1-8 |
| ISSN: | 1873-2445 |
| DOI: | 10.1016/j.physletb.2023.137755 |
| Online-Zugang: | 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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| Verfasserangaben: | STAR Collaboration* |
MARC
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| 500 | |a Gesehen am 16.08.2023 | ||
| 520 | |a 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). | ||
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