Ambiguities in the hadro-chemical freeze-out of Au+Au collisions at SIS18 energies and how to resolve them

Anton Motornenko, Jan Steinheimer, Volodymyr Vovchenko +2

The thermal fit to preliminary HADES data of Au+Au collisions at $\sqrt{s_{{}_{NN}}}=2.4$ GeV shows two degenerate solutions at $T\approx 50$ MeV and $T\approx 70$ MeV. The analysis of…