Fluctuations in heavy ion collisions and global conservation effects
arXiv:2210.02960 · doi:10.1051/epjconf/202327601005
Abstract
Subensemble is a type of statistical ensemble which is the generalization of grand canonical and canonical ensembles. The subensemble acceptance method (SAM) provides general formulas to correct the cumulants of distributions in heavy-ion collisions for the global conservation of all QCD charges. The method is applicable for an arbitrary equation of state and sufficiently large systems, such as those created in central collisions of heavy ions. The new fluctuation measures insensitive to global conservation effects are presented. The main results are illustrated in the hadron resonance gas and van der Waals fluid frameworks.
5 pages, 1 fugure, contribution to the proceedings of Strangeness in Quark Matter 2022
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