Energy dependence of high moments for net-proton distributions

High moments of multiplicity distributions of conserved quantities are predicted to be sensitive to critical fluctuations. To understand the effect of the non-critical physics backgrounds on the proposed observable, we have studied various moments of net-proton distributions with the AMPT, Hijing, T...

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Published in:Journal of physics. G, Nuclear and particle physics Nuclear and particle physics, 2010-09, Vol.37 (9), p.094061-094061
Main Authors: Luo, X F, Mohanty, B, Ritter, H G, Xu, N
Format: Article
Language:English
Subjects:
BARYON NUMBER
Critical point
Emission
Energy (nuclear)
ENERGY DEPENDENCE
Energy use
Evolution
Fluctuation
FLUCTUATIONS
Lattices
Mathematical models
MULTIPLICITY
NUCLEAR PHYSICS AND RADIATION PHYSICS
PHYSICS
QUANTUM CHROMODYNAMICS
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container_issue 9
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container_title Journal of physics. G, Nuclear and particle physics
container_volume 37
creator Luo, X F
Mohanty, B
Ritter, H G
Xu, N
description High moments of multiplicity distributions of conserved quantities are predicted to be sensitive to critical fluctuations. To understand the effect of the non-critical physics backgrounds on the proposed observable, we have studied various moments of net-proton distributions with the AMPT, Hijing, Therminator and UrQMD models, in which no QCD critical point physics is implemented. It is found that the centrality evolution of various moments of net-proton distributions can be uniformly described by a superposition of emission sources. In addition, in the absence of critical phenomena, some moment products of net-proton distributions, related to the baryon number susceptibilities in lattice QCD calculations, are predicted to be constant as a function of the collision centrality. We argue that a non-monotonic dependence of the moment products as a function of the beam energy may be used to locate the QCD critical point.
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source American Physical Society:Jisc Collections:APS Read and Publish 2023-2025 (reading list); Institute of Physics:Jisc Collections:IOP Publishing Read and Publish 2024-2025 (Reading List)
subjects BARYON NUMBER
Critical point
Emission
Energy (nuclear)
ENERGY DEPENDENCE
Energy use
Evolution
Fluctuation
FLUCTUATIONS
Lattices
Mathematical models
MULTIPLICITY
NUCLEAR PHYSICS AND RADIATION PHYSICS
PHYSICS
QUANTUM CHROMODYNAMICS
title Energy dependence of high moments for net-proton distributions
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