Searching for Minimum in Dependence of Squared Speed-of-Sound on Collision Energy

Searching for Minimum in Dependence of Squared Speed-of-Sound on Collision Energy

Experimental results of the rapidity distributions of negatively charged pions produced in proton-proton (p-p) and beryllium-beryllium (Be-Be) collisions at different beam momentums, measured by the NA61/SHINE Collaboration at the super proton synchrotron (SPS), are described by a revised (three-sou...

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Main Authors: Fu-Hu Liu, Li-Na Gao, Roy A. Lacey
Format: Article
Language:English
Published: Hindawi Limited 2016-01-01
Series:Advances in High Energy Physics
Online Access:http://dx.doi.org/10.1155/2016/9467194
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spelling doaj-da964ca9eae144cc95c5ccd26c71f5692020-11-24T23:05:09ZengHindawi LimitedAdvances in High Energy Physics1687-73571687-73652016-01-01201610.1155/2016/94671949467194Searching for Minimum in Dependence of Squared Speed-of-Sound on Collision EnergyFu-Hu Liu0Li-Na Gao1Roy A. Lacey2Institute of Theoretical Physics, Shanxi University, Taiyuan, Shanxi 030006, ChinaInstitute of Theoretical Physics, Shanxi University, Taiyuan, Shanxi 030006, ChinaDepartments of Chemistry & Physics, Stony Brook University, Stony Brook, NY 11794, USAExperimental results of the rapidity distributions of negatively charged pions produced in proton-proton (p-p) and beryllium-beryllium (Be-Be) collisions at different beam momentums, measured by the NA61/SHINE Collaboration at the super proton synchrotron (SPS), are described by a revised (three-source) Landau hydrodynamic model. The squared speed-of-sound parameter cs2 is then extracted from the width of rapidity distribution. There is a local minimum (knee point) which indicates a softest point in the equation of state (EoS) appearing at about 40A GeV/c (or 8.8 GeV) in cs2 excitation function (the dependence of cs2 on incident beam momentum (or center-of-mass energy)). This knee point should be related to the searching for the onset of quark deconfinement and the critical point of quark-gluon plasma (QGP) phase transition.http://dx.doi.org/10.1155/2016/9467194
collection DOAJ
language English
format Article
sources DOAJ
author Fu-Hu Liu
Li-Na Gao
Roy A. Lacey
spellingShingle Fu-Hu Liu
Li-Na Gao
Roy A. Lacey
Searching for Minimum in Dependence of Squared Speed-of-Sound on Collision Energy
Advances in High Energy Physics
author_facet Fu-Hu Liu
Li-Na Gao
Roy A. Lacey
author_sort Fu-Hu Liu
title Searching for Minimum in Dependence of Squared Speed-of-Sound on Collision Energy
title_short Searching for Minimum in Dependence of Squared Speed-of-Sound on Collision Energy
title_full Searching for Minimum in Dependence of Squared Speed-of-Sound on Collision Energy
title_fullStr Searching for Minimum in Dependence of Squared Speed-of-Sound on Collision Energy
title_full_unstemmed Searching for Minimum in Dependence of Squared Speed-of-Sound on Collision Energy
title_sort searching for minimum in dependence of squared speed-of-sound on collision energy
publisher Hindawi Limited
series Advances in High Energy Physics
issn 1687-7357
1687-7365
publishDate 2016-01-01
description Experimental results of the rapidity distributions of negatively charged pions produced in proton-proton (p-p) and beryllium-beryllium (Be-Be) collisions at different beam momentums, measured by the NA61/SHINE Collaboration at the super proton synchrotron (SPS), are described by a revised (three-source) Landau hydrodynamic model. The squared speed-of-sound parameter cs2 is then extracted from the width of rapidity distribution. There is a local minimum (knee point) which indicates a softest point in the equation of state (EoS) appearing at about 40A GeV/c (or 8.8 GeV) in cs2 excitation function (the dependence of cs2 on incident beam momentum (or center-of-mass energy)). This knee point should be related to the searching for the onset of quark deconfinement and the critical point of quark-gluon plasma (QGP) phase transition.
url http://dx.doi.org/10.1155/2016/9467194
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AT linagao searchingforminimumindependenceofsquaredspeedofsoundoncollisionenergy
AT royalacey searchingforminimumindependenceofsquaredspeedofsoundoncollisionenergy
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