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

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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Veröffentlicht in:Physics letters. B 2023-04, Vol.839, p.137755, Article 137755
Hauptverfasser: Adams, J.R., Agakishiev, G., Aggarwal, M.M., Bairathi, V., Barish, K., Cebra, D., Ceska, J., Chakaberia, I., Chang, Z., Dedovich, T.G., Di Carlo, L., Dixit, P., Engelage, J., Fazio, S., Feng, C.J., Geurts, F., Gou, X., Hamed, A., Han, Y., He, W., He, X.H., Hu, C., Huang, H., Huang, H.Z., Huang, T., Huang, X., Huang, Y., Humanic, T.J., Jin, C., Ju, X., Kabana, S., Kalinkin, D., Kimelman, B., Kiselev, A., Kunnawalkam Elayavalli, R., Lacey, R., Lebedev, A., Lednicky, R., Liang, Y., Liu, L., Liu, X., Liu, Y., Ljubicic, T., Llope, W.J., Lomicky, O., Lukow, N.S., Luo, X.F., Matis, H.S., Mi, K., Mukherjee, A., Nasim, Md, Nishitani, R., Nonaka, T., Panebratsev, Y., Pani, T., Parfenov, P., Paul, A., Perkins, C., Protzman, T., Ray, R.L., Ritter, H.G., Sato, S., Shah, N., Shanmuganathan, P.V., Sharma, M., Sharma, S.R., Sheikh, A.I., Shou, Q.Y., Song, Y., Srivastava, B., Sun, X., Sun, Y., Tang, A.H., Tang, Z., Tlusty, D., Tokarev, M.V., Tribedy, P., Tu, Z., Wang, F., Wang, X., Wang, Y., Wieman, H., Wissink, S.W., Xi, B., Xiao, Z.G., Xu, Y., Yan, G., Yan, Z., Yang, C., Yang, S., Yang, Y., Zhang, C., Zhang, J., Zhang, S., Zhang, Y., Zhang, Z.J., Zhou, C., Zhou, S., Zhou, Y., Zhu, X.
Format: Artikel
Sprache:eng
Schlagworte:
Collectivity
Correlation
NUCLEAR PHYSICS AND RADIATION PHYSICS
Shear viscosity
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Zusammenfassung: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).
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2023.137755