Multi-strange baryon production in pp, p-Pb and Pb-Pb collisions at LHC measured with ALICE

TL;DR

This paper reports measurements of multi-strange baryon production in different collision systems at the LHC, providing insights into strangeness production and nuclear modification effects.

Contribution

It presents new measurements of $ ext{Xi}$ and $ extOmega$ baryons in pp, p-Pb, and Pb-Pb collisions, highlighting the evolution of strangeness production across systems.

Findings

Strange baryon yields increase with system size.

Nuclear modification factors vary among particle types.

Enhanced strangeness production observed in heavy-ion collisions.

Abstract

Transverse momentum spectra and yields of charged $\Xi$ and $\Omega$ at mid-rapidity in pp, p-Pb and Pb-Pb collisions at the LHC have been measured by the ALICE Collaboration. These baryons are identified by reconstruction of their weak decay topology, in modes with only charged decay products, using the excellent tracking and particle identification capabilities of the detector. The recent measurements of the multi-strange baryon production relative to non-strange particles in p-Pb collisions are presented: this would help to understand the change in relative strangeness production from pp collisions to Pb-Pb collisions. Results on the nuclear modification factors for the charged $\Xi$ and $\Omega$ particles, compared with those for other light particles, are also reported.