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

0496779 - ÚJF 2019 RIV NL eng J - Článek v odborném periodiku
Adamczyk, L. - Adams, J. R. - Adkins, J. K. - Agakishiev, G. - Bielčík, J. - Bielčíková, Jana - Chaloupka, P. - Federič, Pavol - Federičová, P. - Harlenderová, A. - Kocmánek, Martin - Kvapil, J. - Lidrych, J. - Rusňák, Jan - Rusňáková, O. - Šaur, Miroslav - Šimko, Miroslav - Trzeciak, B. A. … celkem 349 autorů
Collision energy dependence of moments of net-kaon multiplicity distributions at RHIC.
Physics Letters. B. Roč. 785, č. 10 (2018), s. 551-560. ISSN 0370-2693. E-ISSN 1873-2445
Grant CEP: GA MŠMT EF16_013/0001569
Institucionální podpora: RVO:61389005
Klíčová slova: STAR collaboration * heavy ion collisions
Obor OECD: Particles and field physics
Impakt faktor: 4.162, rok: 2018

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 root 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 (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.
Trvalý link: http://hdl.handle.net/11104/0289420