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

Abstract

Here, 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 √ sNN = 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.

Authors:
 [1];  [2];  [1];  [1]
  1. Duke Univ., Durham, NC (United States)
  2. INFN - Sezione di Firenze, Sesto Fiorentino (Firenze) (Italy)
Publication Date:
Research Org.:
Duke Univ., Durham, NC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1502390
Grant/Contract Number:  
[FG02-05ER41367]
Resource Type:
Accepted Manuscript
Journal Name:
Nuclear Physics. A
Additional Journal Information:
[ Journal Volume: 967; Journal Issue: C]; Journal ID: ISSN 0375-9474
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Quark-gluon plasma; Beam energy scan

Citation Formats

Auvinen, Jussi, Karpenko, Iurii, Bernhard, Jonah E., and Bass, Steffen A. Revealing the collision energy dependence of η/s in RHIC-BES Au+Au collisions using Bayesian statistics. United States: N. p., 2017. Web. doi:10.1016/j.nuclphysa.2017.05.107.
Auvinen, Jussi, Karpenko, Iurii, Bernhard, Jonah E., & Bass, Steffen A. Revealing the collision energy dependence of η/s in RHIC-BES Au+Au collisions using Bayesian statistics. United States. doi:10.1016/j.nuclphysa.2017.05.107.
Auvinen, Jussi, Karpenko, Iurii, Bernhard, Jonah E., and Bass, Steffen A. Mon . "Revealing the collision energy dependence of η/s in RHIC-BES Au+Au collisions using Bayesian statistics". United States. doi:10.1016/j.nuclphysa.2017.05.107. https://www.osti.gov/servlets/purl/1502390.
@article{osti_1502390,
title = {Revealing the collision energy dependence of η/s in RHIC-BES Au+Au collisions using Bayesian statistics},
author = {Auvinen, Jussi and Karpenko, Iurii and Bernhard, Jonah E. and Bass, Steffen A.},
abstractNote = {Here, 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 √sNN = 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 μB.},
doi = {10.1016/j.nuclphysa.2017.05.107},
journal = {Nuclear Physics. A},
number = [C],
volume = [967],
place = {United States},
year = {2017},
month = {9}
}

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Free Publicly Available Full Text
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Cited by: 1 work
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Figures / Tables:

Fig. 1. Fig. 1. : (Color online) Comparison of emulator predictions on elliptic flow $v$2 and Ω multiplicity at $\sqrt{^sNN}$ = 39 GeV, both without weighting (red) and with additional weights (blue). Triangles represent full model calculations using median values of parameter posterior distributions, while open squares are the respective emulator predictionsmore » for the same input parameter combinations. STAR $v$2 data from [17] and Ω data from [22].« less

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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.