Strange and Multi-Strange Particle Production in ALICE

TL;DR

This paper reports on the production rates of strange and multi-strange particles in proton-proton and lead-lead collisions at the LHC, providing insights into particle production mechanisms in high-energy nuclear physics.

Contribution

It presents new measurements of strange and multi-strange hadron yields in Pb-Pb and pp collisions at 2.76 TeV, comparing them across collision systems and energies.

Findings

Enhanced strange particle production in Pb-Pb collisions

Comparison of yields between Pb-Pb and pp collisions

Results consistent with previous lower-energy measurements

Abstract

The production of strange and multi-strange hadrons in proton-proton (pp) and lead-lead (Pb-Pb) collisions is studied with the ALICE experiment at the CERN LHC. These particles are reconstructed via their weak decay topologies, exploiting the tracking and particle identification capabilities of ALICE. Measurements of central rapidity yields of $\Lambda$, $\Xi^{-}$ and $\Omega^{-}$ baryons, their antiparticles and ${\mathrm K}^{0}_{S}$ mesons are presented as a function of transverse momentum for Pb-Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV. They are compared to those observed in pp collisions as well as to results from lower energy nucleus-nucleus measurements.