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

Abstract

We investigate the collision energy dependence of $\eta /s$ 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 $\eta /s$ at $19.6$ GeV compared to $62.4$ GeV, indicating dependence on baryon chemical potential ${\mu }_B$.

7 pages, 3 figures. Talk by J. Auvinen at Quark Matter 2017, February 6-11, 2017, Chicago, IL, USA

References in corpus (7)

• Systematic Measurements of Identified Particle Spectra in pp, d+Au and Au+Au Collisions from STAR
• On the Strongly-Interacting Low-Viscosity Matter Created in Relativistic Nuclear Collisions
• Phobos results on charged particle multiplicity and pseudorapidity distributions in Au+Au, Cu+Cu, d+Au, and p+p collisions at ultra-relativistic energies
• Inclusive charged hadron elliptic flow in Au + Au collisions at $\sqrt{s_{NN}}$ = 7.7 - 39 GeV
• Estimation of the shear viscosity at finite net-baryon density from A+A collision data at $\sqrt{s_{\mathrm{NN}}}=7.7-200$ GeV
• An effective chiral Hadron-Quark Equation of State
• Strange and Multi-strange Particle Production in Au+Au Collisions at $\sqrt{s_{NN}}$ = 62.4 GeV

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