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

Flor, Fernando Antonio; Olinger, Gabrielle; Bellwied, René

doi:10.1016/j.physletb.2021.136098

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

Journal Article · Fri Jan 01 00:00:00 EST 2021 · Physics Letters B

DOI:https://doi.org/10.1016/j.physletb.2021.136098· OSTI ID:1761542

; Olinger, Gabrielle; Bellwied, René

We present calculations of the chemical freeze-out temperature (Tch) based on particle yields from STAR and ALICE measured at collision energies ranging from $$\sqrt{s_{NN}}$$ = 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 T_L = 150.2 ± 2.6 MeV and T_S = 165.1 ± 2.7 MeV, respectively.

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Research Organization:: Univ. of Houston, TX (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

Grant/Contract Number:: DEFG02-07ER4152; FG02-07ER41521

OSTI ID:: 1761542

Alternate ID(s):: OSTI ID: 1849736

Journal Information:: Physics Letters B, Journal Name: Physics Letters B; ISSN 0370-2693

Publisher:: ElsevierCopyright Statement

Country of Publication:: Netherlands

Language:: English

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
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Hadron resonance gas

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

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