Flavour and energy dependence of chemical freeze-out temperatures in relativistic heavy ion collisions from RHIC-BES to LHC energies

Flavour and energy dependence of chemical freeze-out temperatures in relativistic heavy ion collisions from RHIC-BES to LHC energies

We present calculations of the chemical freeze-out temperature (Tch) based on particle yields from STAR and ALICE measured at collision energies ranging from sNN= 11.5 GeV to 5.02 TeV. Employing the Grand Canonical Ensemble approach using the Thermal-FIST Hadron Resonance Gas model package, we show...

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Bibliographic Details
Main Authors: Fernando Antonio Flor, Gabrielle Olinger, René Bellwied
Format: Article
Language:English
Published: Elsevier 2021-03-01
Series:Physics Letters B
Subjects:
Sequential flavour freeze-out
Statistical hadronization
Hadron resonance gas
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269321000381
Description
Summary:We present calculations of the chemical freeze-out temperature (Tch) based on particle yields from STAR and ALICE measured at collision energies ranging from sNN= 11.5 GeV to 5.02 TeV. Employing the Grand Canonical Ensemble approach using the Thermal-FIST Hadron Resonance Gas model package, we show evidence for a flavour-dependent chemical freeze-out in the crossover region of the QCD phase diagram. At a vanishing baryochemical potential, we calculate light and strange flavour freeze-out temperatures TL=150.2±2.6 MeV and TS=165.1±2.7 MeV, respectively.
ISSN:0370-2693

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