Study of the Multiplicity Dependence of Strange and Multi-Strange Particles in pp Collisions

Several effects typical of heavy-ion phenomenology have been observed in high-multiplicity proton-proton (pp) collisions. Recent ALICE results on enhanced production of multi-strange particles in high-multiplicity proton-proton collisions show that, the enhancement increases with strangeness content rather than with mass or baryon number of the hadron. This opens up challenges for a thorough understanding of such novel behaviour which can not be reproduced by any of the commonly used Monte Carlo (MC) models. Tsallis statistics provides a very good description of the transverse momentum distributions of strange and multi-strange particles produced in pp collisions at √s = 7 TeV