Results on strangeness production from HADES

TL;DR

This paper presents new experimental results on the production of strange particles like K+, K-, phi, K0 S, and lambda in Ar+KCl collisions at 1.76 AGeV, including transverse momentum distributions and slope parameters, providing valuable data for theoretical comparisons.

Contribution

First measurements of K+, K-, and phi mesons independently at SIS energies, with detailed transverse momentum distributions and slope parameters for phi mesons.

Findings

Measured transverse momentum distributions across large phase space

First independent measurements of K+, K-, and phi mesons at these energies

Collected high-statistics data for K0 S and lambda around mid-rapidity

Abstract

Resent results concerning the production of K+, K-, phi, K0 S and lambda particles in the reaction system Ar+KCl at 1.76 AGeV measured by the HADES Collaboration are presented. Transverse momentum distributions have been measured in a large fraction of the phase space. For the first time, at SIS energies, K+, K- and phi mesons have been measured independently and the slope parameter for phi mesons could be extracted. A large statistics has been collected for the produced K0S and lambda in the phase space region around mid-rapity. The high quality of these data render them very suitable for comparisons with theoretical models.