A hybrid model approach for strange and multi-strange hadrons in 2.76 A TeV Pb+Pb collisions

TL;DR

This paper employs the VISHNU hybrid model to analyze strange and multi-strange hadrons in Pb+Pb collisions at 2.76 A TeV, successfully describing their multiplicity, spectra, and flow, and exploring freeze-out conditions.

Contribution

The study demonstrates the effectiveness of the VISHNU hybrid model in reproducing strange hadron data and investigates their freeze-out properties at the LHC.

Findings

Model accurately describes multiplicity and spectra of strange hadrons.

Mass ordering of elliptic flow observed among different hadrons.

Provides insights into chemical and thermal freeze-out conditions.

Abstract

Using the VISHNU hybrid model, we calculate the multiplicity, spectra, and elliptic flow of $\Lambda$, $\Xi$ and $\Omega$ in 2.76 A TeV Pb+Pb collisions. Comparisons between our calculations and the ALICE measurements show that the model generally describes the soft hadron data of these strange and multi-strange hadrons at several centrality bins. Mass ordering of elliptic flow among $\pi$, K, p, $\Lambda$, $\Xi$ and $\Omega$ has also been studied and discussed. With a nice description of the particle yields, we explore chemical and thermal freeze-out of various hadrons species at the LHC within the framework of the VISHNU hybrid model.