Orateur
Description
Investigating strangeness production and propagation in heavy-ion collisions in the few GeV energy regime is a sensitive tool for studying the properties of matter at high baryo-chemical potential.
In this contribution, we present results on the production of strange hadrons from a total of $3\times10^9$ most active Ag(1.58$A$ GeV)+Ag events recorded with HADES and compare the measured multiplicities with results obtained from a hadron resonance gas model realizations with different parameters. Special attention is put to the comparison between different canonical descriptions in the context of strangeness suppression.
With respect to this, the $\phi(1020)$/$\Xi^-$- and $\phi(1020)$/$K^-$-ratios are utilized to test the consistency of the corresponding models in describing their relative yields. The significant softening of the $K^-$ transverse spectra due to the $\phi(1020)$ feed-down is also discussed.
Furthermore, we discuss the centrality ($A_{part}$) dependence of strange-hadron multiplicities, which were found to follow a universal scaling for the collision system Au(1.23$A$ GeV)+Au.
Finally, we present a first glimpse into this year's Au+Au beam energy scan data at energies between 400 and 800 $A$ GeV.
