Strange Hadron and Resonance Particle Production in Different Collision Systems at the LHC Energies
摘要
Strangeness enhancement in high-energy heavy-ion collisions remains a key signature to identify the formation of Quark-Gluon Plasma (QGP) in such col- lisions. The study of strange hadrons and resonances may provide valuable information about the strongly interacting matter produced in heavy-ion col- lisions. In particular, the resonance particles are important because of their shorter lifetime (a few fm/c), comparable to the medium lifetime and due to the rescattering and regeneration processes at the freeze-outs, the yields of the resonances may vary w.r.t to the non-resonance particles. Recent studies of small collision systems at the Large Hadron Collider (LHC) show unambiguous similarities for hadron production between high multiplicity pp, pPb collisions and PbPb collisions. The strangeness enhancement and ratio of yields of identified hadrons play important role in characterizing the LHC data in different collision systems. In this contribution, we investigate the strange hadron and resonance yields using a pQCD-inspired multiple parton scattering approach-based model, EPOS3 including hydrodynamical evolution of produced particles. The results of the yield ratios of identified hadrons will be presented for pp, pPb and PbPb collisions at various LHC energies, exploiting the model parameters to understand the sensitivity on the microscopic mechanism of hadron production.