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Title: Applying Bayesian parameter estimation to relativistic heavy-ion collisions: Simultaneous characterization of the initial state and quark-gluon plasma medium

Abstract

We quantitatively estimate properties of the quark-gluon plasma created in ultrarelativistic heavy-ion collisions utilizing Bayesian statistics and a multiparameter model-to-data comparison. The study is performed using a recently developed parametric initial condition model, T RENTo, which interpolates among a general class of particle production schemes, and a modern hybrid model which couples viscous hydrodynamics to a hadronic cascade.We calibrate the model to multiplicity, transverse momentum, and flow data and report constraints on the parametrized initial conditions and the temperature-dependent transport coefficients of the quark-gluon plasma. We show that initial entropy deposition is consistent with a saturation-based picture, extract a relation between the minimum value and slope of the temperature-dependent specific shear viscosity, and find a clear signal for a nonzero bulk viscosity.

Authors:
 [1];  [1];  [1];  [2];  [2]
  1. Duke Univ., Durham, NC (United States). Dept. of Physics
  2. The Ohio State Univ., Columbus, OH (United States). Dept. of Physics
Publication Date:
Research Org.:
The Ohio State Univ., Columbus, OH (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF); USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1604412
Alternate Identifier(s):
OSTI ID: 1294682
Grant/Contract Number:  
SC0004286; FG02-05ER41367; FC52-08NA28752
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 94; Journal Issue: 2; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Bernhard, Jonah E., Moreland, J. Scott, Bass, Steffen A., Liu, Jia, and Heinz, Ulrich. Applying Bayesian parameter estimation to relativistic heavy-ion collisions: Simultaneous characterization of the initial state and quark-gluon plasma medium. United States: N. p., 2016. Web. doi:10.1103/PhysRevC.94.024907.
Bernhard, Jonah E., Moreland, J. Scott, Bass, Steffen A., Liu, Jia, & Heinz, Ulrich. Applying Bayesian parameter estimation to relativistic heavy-ion collisions: Simultaneous characterization of the initial state and quark-gluon plasma medium. United States. doi:10.1103/PhysRevC.94.024907.
Bernhard, Jonah E., Moreland, J. Scott, Bass, Steffen A., Liu, Jia, and Heinz, Ulrich. Fri . "Applying Bayesian parameter estimation to relativistic heavy-ion collisions: Simultaneous characterization of the initial state and quark-gluon plasma medium". United States. doi:10.1103/PhysRevC.94.024907. https://www.osti.gov/servlets/purl/1604412.
@article{osti_1604412,
title = {Applying Bayesian parameter estimation to relativistic heavy-ion collisions: Simultaneous characterization of the initial state and quark-gluon plasma medium},
author = {Bernhard, Jonah E. and Moreland, J. Scott and Bass, Steffen A. and Liu, Jia and Heinz, Ulrich},
abstractNote = {We quantitatively estimate properties of the quark-gluon plasma created in ultrarelativistic heavy-ion collisions utilizing Bayesian statistics and a multiparameter model-to-data comparison. The study is performed using a recently developed parametric initial condition model, TRENTo, which interpolates among a general class of particle production schemes, and a modern hybrid model which couples viscous hydrodynamics to a hadronic cascade.We calibrate the model to multiplicity, transverse momentum, and flow data and report constraints on the parametrized initial conditions and the temperature-dependent transport coefficients of the quark-gluon plasma. We show that initial entropy deposition is consistent with a saturation-based picture, extract a relation between the minimum value and slope of the temperature-dependent specific shear viscosity, and find a clear signal for a nonzero bulk viscosity.},
doi = {10.1103/PhysRevC.94.024907},
journal = {Physical Review C},
issn = {2469-9985},
number = 2,
volume = 94,
place = {United States},
year = {2016},
month = {8}
}

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Cited by: 44 works
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