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Title: Collision Energy Dependence of Moments of Net-Kaon Multiplicity Distributions at RHIC

Abstract

Fluctuations of conserved quantities such as baryon number, charge, and strangeness are sensitive to the correlation length of the hot and dense matter created in relativistic heavy-ion collisions and can be used to search for the QCD critical point. We report the first measurements of the moments of net-kaon multiplicity distributions in Au+Au collisions at p √s NN = 7.7, 11.5, 14.5, 19.6, 27, 39, 62.4, and 200 GeV. The collision centrality and energy dependence of the mean (M), variance (σ 2), skewness (S), and kurtosis (κ) for net-kaon multiplicity distributions as well as the ratio σ 2/M and the products Sσ and κσ 2 are presented. Comparisons are made with Poisson and negative binomial baseline calculations as well as with UrQMD, a transport model (UrQMD) that does not include effects from the QCD critical point. Here, within current uncertainties, the net-kaon cumulant ratios appear to be monotonic as a function of collision energy.

Authors:
 [1]
  1. AGH Univ. of Science and Technology, Cracow (Poland). et al.
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Contributing Org.:
STAR Collaboration
OSTI Identifier:
1460830
Alternate Identifier(s):
OSTI ID: 1506370
Report Number(s):
BNL-207847-2018-JAAM
Journal ID: ISSN 0370-2693; PII: S0370269318306403; TRN: US1901925
Grant/Contract Number:  
SC0012704; AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 785; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Adamczyk, Leszek. Collision Energy Dependence of Moments of Net-Kaon Multiplicity Distributions at RHIC. United States: N. p., 2018. Web. doi:10.1016/j.physletb.2018.07.066.
Adamczyk, Leszek. Collision Energy Dependence of Moments of Net-Kaon Multiplicity Distributions at RHIC. United States. doi:10.1016/j.physletb.2018.07.066.
Adamczyk, Leszek. Mon . "Collision Energy Dependence of Moments of Net-Kaon Multiplicity Distributions at RHIC". United States. doi:10.1016/j.physletb.2018.07.066. https://www.osti.gov/servlets/purl/1460830.
@article{osti_1460830,
title = {Collision Energy Dependence of Moments of Net-Kaon Multiplicity Distributions at RHIC},
author = {Adamczyk, Leszek},
abstractNote = {Fluctuations of conserved quantities such as baryon number, charge, and strangeness are sensitive to the correlation length of the hot and dense matter created in relativistic heavy-ion collisions and can be used to search for the QCD critical point. We report the first measurements of the moments of net-kaon multiplicity distributions in Au+Au collisions at p √sNN = 7.7, 11.5, 14.5, 19.6, 27, 39, 62.4, and 200 GeV. The collision centrality and energy dependence of the mean (M), variance (σ2), skewness (S), and kurtosis (κ) for net-kaon multiplicity distributions as well as the ratio σ2/M and the products Sσ and κσ2 are presented. Comparisons are made with Poisson and negative binomial baseline calculations as well as with UrQMD, a transport model (UrQMD) that does not include effects from the QCD critical point. Here, within current uncertainties, the net-kaon cumulant ratios appear to be monotonic as a function of collision energy.},
doi = {10.1016/j.physletb.2018.07.066},
journal = {Physics Letters. Section B},
number = ,
volume = 785,
place = {United States},
year = {2018},
month = {7}
}

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