Proton number fluctuations in partial chemical equilibrium

نویسندگان

چکیده

We calculate volume-independent ratios of cumulants the net-proton number distribution up to sixth order in a fireball that cools down after chemical freeze-out. A hadron resonance gas model is used together with assumption partial equilibrium, which fixes observed stable hadrons It shown due only weak departure from statistical Boltzmann distribution, also higher-order show dependence on temperature. This observation supports possibility measure non-critical at freeze-out even subsequent cooling hadronic phase. Cumulants net-baryon behave similarly, while those for kaon vary more strongly Our results are relevant current fluctuation studies RHIC-BES runs.

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ژورنال

عنوان ژورنال: Physical Review C

سال: 2021

ISSN: ['2470-0002', '2469-9985', '2469-9993']

DOI: https://doi.org/10.1103/physrevc.104.044907