Speaker
Description
Recent measurements in high-multiplicity proton-proton (pp) and proton-lead (p-Pb)
collisions show several features that are similar to those observed in heavy-ion collisions. In this respect strangeness production may provide a valuable investigative
tool.
Baryon-to-meson ratios, such as Λ/KS0, have been measured
differentially in pT and show an evolution with increasing charged particle
multiplicity in small systems similar to the one observed with centrality in heavy-ion
collisions, where this behaviour is interpreted to be strongly related to the
hydrodynamical evolution of the system. Furthermore the production rate of strange and
multi-strange hadrons relative to pions exhibits a significant increase with multiplicity
in pp collisions, similarly to that observed in p-Pb. This increase is observed to be
more pronounced for hadrons with a larger strangeness content.
In this talk strange (KS0,Λ,Λ) and multi-strange (Ξ,Ω) hadron
production measurements at mid-rapidity, in pp collisions at √s = 7 TeV, will be shown
as a function of charged-particle multiplicity. Perspectives for similar studies at √s = 13 TeV will also be discussed.
| Collaboration | ALICE |
|---|
