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Title: Constraining the equation of state of superhadronic matter from heavy-ion collisions

Abstract

The equation of state of QCD matter for temperatures near and above the quark-hadron transition (~165 MeV) is inferred within a Bayesian framework through the comparison of data from the Relativistic Heavy Ion Collider and from the Large Hadron Collider to theoretical models. State-of-the-art statistical techniques are applied to simultaneously analyze multiple classes of observables while varying 14 independent model parameters. Thus, the resulting posterior distribution over possible equations of state is consistent with results from lattice gauge theory.

Authors:
 [1];  [2];  [1];  [2]
  1. Michigan State Univ., East Lansing, MI (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1201365
Alternate Identifier(s):
OSTI ID: 1182804
Report Number(s):
BNL-108185-2015-JA
Journal ID: ISSN 0031-9007; PRLTAO; R&D Project: PO 004; KB0202012
Grant/Contract Number:
SC00112704; FG02-03ER41259
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 114; Journal Issue: 20; Conference: Naples (Italy), 3-5 Jun 2014; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Relativistic Heavy Ion Collider

Citation Formats

Pratt, Scott, Sorensen, Paul, Sangaline, Evan, and Wang, Hui. Constraining the equation of state of superhadronic matter from heavy-ion collisions. United States: N. p., 2015. Web. doi:10.1103/PhysRevLett.114.202301.
Pratt, Scott, Sorensen, Paul, Sangaline, Evan, & Wang, Hui. Constraining the equation of state of superhadronic matter from heavy-ion collisions. United States. doi:10.1103/PhysRevLett.114.202301.
Pratt, Scott, Sorensen, Paul, Sangaline, Evan, and Wang, Hui. Tue . "Constraining the equation of state of superhadronic matter from heavy-ion collisions". United States. doi:10.1103/PhysRevLett.114.202301. https://www.osti.gov/servlets/purl/1201365.
@article{osti_1201365,
title = {Constraining the equation of state of superhadronic matter from heavy-ion collisions},
author = {Pratt, Scott and Sorensen, Paul and Sangaline, Evan and Wang, Hui},
abstractNote = {The equation of state of QCD matter for temperatures near and above the quark-hadron transition (~165 MeV) is inferred within a Bayesian framework through the comparison of data from the Relativistic Heavy Ion Collider and from the Large Hadron Collider to theoretical models. State-of-the-art statistical techniques are applied to simultaneously analyze multiple classes of observables while varying 14 independent model parameters. Thus, the resulting posterior distribution over possible equations of state is consistent with results from lattice gauge theory.},
doi = {10.1103/PhysRevLett.114.202301},
journal = {Physical Review Letters},
number = 20,
volume = 114,
place = {United States},
year = {Tue May 19 00:00:00 EDT 2015},
month = {Tue May 19 00:00:00 EDT 2015}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 32works
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  • The dynamics of pions and strange particles in heavy-ion collisions in the region of 1A GeV energies is investigated by the lanzhou quantum molecular dynamics model for probing the nuclear equation of state at suprasaturation densities. The total multiplicities and the ratios obtained in {sup 197}Au+{sup 197}Au over {sup 12}C+{sup 12}C systems are calculated for selected Skyrme parameters SkP, SLy6, Ska, and SIII, which correspond to different modulus of incompressibility of symmetric nuclear matter and different cases of the stiffness of symmetry energy. A decreasing trend of the excitation functions of the ratios for strange particle production with increasing incidentmore » energy was observed. The available data of K{sup +} production measured by KaoS collaboration are described well with the parameter SkP, which results in a soft equation of state. The conclusions cannot be modified by an in-medium kaon-nucleon potential.« less
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  • We demonstrate that momentum-dependent nuclear interactions (MDI) have a large effect on the dynamics and on the observables of high-energy heavy-ion collisions: A soft potential with MDI suppresses pion and kaon yields much more strongly than a local hard potential and results in transverse momenta intermediate between soft and hard local potentials. The collective-flow angles and the deuteron-to-proton ratios are rather insensitive to the MDI. Only simultaneous measurements of these observables can give clues on the nuclear equation of state at densities of interest for supernova collapse and neutron-star stability.
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