Higher Moments of Net-Kaon Multiplicity Distributions at STAR

[摘要] Fluctuations of conserved quantities such as baryon number (B), electric charge number (Q), and strangeness number (S), are sensitive to the correlation length and can be used to probe non-Gaussian fluctuations near the critical point. Experimentally, higher moments of the multiplicity distributions have been used to search for the QCD critical point in heavy-ion collisions. In this paper, we report the efficiency-corrected cumulants and their ratios of mid-rapidity (|y|

[发布机构] Key Laboratory of Quark and Lepton Physics (MOE), Institute of Particle Physics, Central China Normal University, Wuhan; 430079, China^1;Lawrence Berkeley National Laboratory, Berkeley; CA; 94720, United States^2

[关键词] Au+Au collisions;Baseline calculations;Conserved quantity;Correlation lengths;Energy dependence;Heavy ion collision;Multiplicity distributions;Non-Gaussian fluctuations