Subhash Singha (Department of Atomic Energy (IN))
The ALICE experiment at the LHC has measured the production of strange hadrons and resonances in Pb-Pb and pp collisions at unprecedentedly high beam energies. The study of strange hadrons and resonances helps us to understand the medium properties and its evolution at dierent stages. We will present the pT spectra and yields at mid-rapidity for strange hadrons (, labda, xi, omega, their anti-particles and K0S ) and resonances ( and K0 ) for different collision centrality. The results from Pb-Pb collisions at psNN = 2.76 TeV will be presented and compared to corresponding results from pp collisions and lower energy measurements. Baryon to meson ratios, resonance to non-resonance particle ratios relative to pp collisions will be shown as a function of collision centrality and compared with the results at low energies. Finally, the spectral shapes will also be discussed in terms of hydrodynamical-inspired models.
Collaboration ALICE (CERN, Geneva, Switzerland)