Multiplicity dependence of (multi-)strange baryons in the canonical ensemble with phase shift corrections

Understand

The increase in strangeness production with charged particle multiplicity, as seen by the ALICE collaboration at CERN in p-p, p-Pb and Pb-Pb collisions, is investigated in the hadron resonance gas model taking into account interactions among hadrons using S-matrix corrections based on known phase shift analyses.

• Strangeness conservation is taken into account in the framework of the canonical strangeness ensemble.
• A very good description is obtained for the variation of the strangeness content in the final state as a function of the number of charged hadrons in the mid-rapidity region using the same fixed temperature value as obtained in the most central Pb-Pb collisions.
• It is shown that the number of charged hadrons is linearly proportional to the volume of the system.