Collision energy dependence of moments of net-kaon multiplicity distributions at RHIC



Adamczyk, L, Adams, JR, Adkins, JK, Agakishiev, G, Aggarwal, MM, Ahammed, Z, Ajitanand, NN, Alekseev, I, Anderson, DM, Aoyama, R
et al (show 339 more authors) (2018) Collision energy dependence of moments of net-kaon multiplicity distributions at RHIC. PHYSICS LETTERS B, 785. pp. 551-560.

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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 $\sqrt{s_{\rm NN}}$ = 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 ($\sigma^2$), skewness ($S$), and kurtosis ($\kappa$) for net-kaon multiplicity distributions as well as the ratio $\sigma^2/M$ and the products $S\sigma$ and $\kappa\sigma^2$ 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. Within current uncertainties, the net-kaon cumulant ratios appear to be monotonic as a function of collision energy.

Item Type: Article
Additional Information: 12 pages, 11 figures
Uncontrolled Keywords: nucl-ex, nucl-ex, hep-ex, hep-ph, nucl-th
Depositing User: Symplectic Admin
Date Deposited: 30 Apr 2019 10:18
Last Modified: 19 Jan 2023 00:52
DOI: 10.1016/j.physletb.2018.07.066
Open Access URL: https://doi.org/10.1016/j.physletb.2018.07.066
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3039048