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Adkins, J.K.; Agakishiev, G.; Ajitanand, N.N.; Alekseev, I.; Anderson, D.M.; Arkhipkin, D.; Averichev, G.S.; Barish, K.; Bellwied, R.; Bhattarai, P.; Bordyuzhin, I.G.; Brandenburg, J.D.; Bunzarov, I.; Calderón de la Barca Sánchez, M.; Chaloupka, P.; Chattopadhyay, S.; Chen, J.H.; Chen, X.; Cheng, J.; Contin, G.; De Silva, L.C.; Debbe, R.R.; Dong, X.; Drachenberg, J.L.; Draper, J.E.; Dunlop, J.C.; Elsey, N.; Ewigleben, J.; Fatemi, R.; Fedorisin, J.; Fisyak, Y.; Fujita, J.; Fulek, L.; Gibson, A.; Girard, M.; Grosnick, D.; Huang, X.; Jacobs, W.W.; Jia, J.; Jiang, K.; Jowzaee, S.; Kauder, K.; Khan, Z.; Kosarzewski, L.K.; Kumar, L.; Kwasizur, J.H.; Lebedev, A.; Lednicky, R.; Li, W.; Li, X.; Lisa, M.A.; Liu, F.; Lomnitz, M.; Longacre, R.S.; Majka, R.; Margetis, S.; Markert, C.; Matis, H.S.; Mishra, D.; Mustafa, M.K.; Nayak, T.K.; Nie, M.; Pandit, Y.; Pei, H.; Porter, J.; Pruthi, N.K.; Przybycien, M.; Ray, R.L.; Romero, J.L.; Roth, J.D.; Rusnakova, O.; Sahoo, N.R.; Shah, N.; Shanmuganathan, P.V.; Sharma, M.K.; Shi, S.S.; Simko, M.; Smirnov, D.; Srivastava, B.; Stringfellow, B.; Tang, A.H.; Tarnowsky, T.; Thäder, J.; Tribble, R.E.; Tribedy, P.; Tripathy, S.K.; Upsal, I.; Vossen, A.; Wang, G.; Wieman, H.; Wu, Y.; Xiao, Z.G.; Xu, Y.F.; Xu, J.; Yoo, I.-K.; Yu, N.; Zbroszczyk, H.; Zhang, J.B.; Zhang, Z.; Zhou, C.
Physics letters. B, 10/2018, Letnik: 785Journal Article
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 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. Within current uncertainties, the net-kaon cumulant ratios appear to be monotonic as a function of collision energy.
