A1 Journal article (refereed)
System-size dependence of the hadronic rescattering effect at energies available at the CERN Large Hadron Collider (2024)

ALICE Collaboration. (2024). System-size dependence of the hadronic rescattering effect at energies available at the CERN Large Hadron Collider. Physical Review C, 109(1), Article 014911. https://doi.org/10.1103/PhysRevC.109.014911

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Publication details

All authors or editors: ALICE Collaboration

Journal or series: Physical Review C

ISSN: 2469-9985

eISSN: 2469-9993

Publication year: 2024

Publication date: 29/01/2024

Volume: 109

Issue number: 1

Article number: 014911

Publisher: American Physical Society (APS)

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/PhysRevC.109.014911

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published: https://arxiv.org/abs/2308.16115

Abstract

The first measurements of K∗(892)0 resonance production as a function of charged-particle multiplicity in Xe−Xe collisions at √sNN = 5.44 TeV and pp collisions at √s= 5.02 TeV using the ALICE detector are presented. The resonance is reconstructed at midrapidity (|y|<0.5) using the hadronic decay channel K∗0→K±π∓. Measurements of transverse-momentum integrated yield, mean transverse-momentum, nuclear modification factor of K∗0, and yield ratios of resonance to stable hadron (K∗0/K) are compared across different collision systems (pp, p−Pb, Xe−Xe, and Pb−Pb) at similar collision energies to investigate how the production of K∗0 resonances depends on the size of the system formed in these collisions. The hadronic rescattering effect is found to be independent of the size of colliding systems and mainly driven by the produced charged-particle multiplicity, which is a proxy of the volume of produced matter at the chemical freeze-out. In addition, the production yields of K∗0 in Xe−Xe collisions are utilized to constrain the dependence of the kinetic freeze-out temperature on the system size using the hadron resonance gas in partial chemical equilibrium (HRG-PCE) model.

Keywords: particle physics; nuclear physics

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Ministry reporting: Yes

Reporting Year: 2024

Preliminary JUFO rating: 2