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arXiv · 1704.04643

Revealing the collision energy dependence of $η/s$ in RHIC-BES Au+Au collisions using Bayesian statistics

Jussi Auvinen·Iurii Karpenko·Jonah E. Bernhard·Steffen A. Bass
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Abstract

We investigate the collision energy dependence of $η/s$ in a transport + viscous hydrodynamics hybrid model. A Bayesian analysis is performed on RHIC beam energy scan data for $Au+Au$ collisions at $\sqrt{s_{NN}}=19.6,39,$ and $62.4$ GeV. The resulting posterior probability distributions for the model parameters show a preference for a larger value of $η/s$ at $19.6$ GeV compared to $62.4$ GeV, indicating dependence on baryon chemical potential $μ_B$.

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Jussi Auvinen, Iurii Karpenko, Jonah E. Bernhard, Steffen A. Bass. 2017-04-15. Revealing the collision energy dependence of $η/s$ in RHIC-BES Au+Au collisions using Bayesian statistics. https://doi.org/10.1016/j.nuclphysa.2017.05.107

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