Testing the system size dependence of hydrodynamical expansion and thermal particle production with pi, K, p, and phi in Xe-Xe and Pb-Pb collisions with ALICE


Bellini F., Acharya S., Acosta F. T., Adamova D., Adolfsson J., Aggarwal M. M., ...More

NUCLEAR PHYSICS A, vol.982, pp.427-430, 2019 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 982
  • Publication Date: 2019
  • Doi Number: 10.1016/j.nuclphysa.2018.09.082
  • Journal Name: NUCLEAR PHYSICS A
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.427-430
  • Keywords: Identified hadrons yields, particle ratios, phi-meson, thermal fit, hydrodynamics, Xe-Xe, Pb-Pb
  • Bursa Uludag University Affiliated: No

Abstract

We present new results on transverse momentum spectra, integrated yields, and mean transverse momenta of pions, kaons, and protons, as well as of phi-mesons for various centrality classes measured in Pb-Pb and Xe-Xe collisions at the LHC. This unique set of data allows us to investigate bulk particle production for very different systems at similar multiplicities. The chemical and kinetic freeze-out parameters are extracted via statistical-thermal and combined blast-wave fits to the data in heavy-ion collisions and are compared to results obtained in pp and p-Pb collisions at similar multiplicities. The evolution of collective-like effects from pp and p-Pb collisions to Xe-Xe and Pb-Pb collisions is further investigated by detailed comparisons to predictions from models.