Hybrid model approach for strange and multistrange hadrons in2.76ATeVPb+Pbcollisions

Abstract

Using the VISHNU hybrid model, we calculate the multiplicity, spectra, and elliptic flow of $\ensuremath{\Lambda},\phantom{\rule{0.16em}{0ex}}\ensuremath{\Xi}$, and $\ensuremath{\Omega}$ in $2.76A$ 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 multistrange hadrons at several centrality bins. Mass ordering of elliptic flow among $\ensuremath{\pi},\phantom{\rule{0.16em}{0ex}}K,\phantom{\rule{0.16em}{0ex}}p,\phantom{\rule{0.16em}{0ex}}\ensuremath{\Lambda},\phantom{\rule{0.16em}{0ex}}\ensuremath{\Xi}$, and $\ensuremath{\Omega}$ 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 Large Hadron Collider within the framework of the VISHNU hybrid model.