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HK: Fachverband Physik der Hadronen und Kerne
HK 44: Heavy-Ion Collisions and QCD Phases XI
HK 44.4: Vortrag
Donnerstag, 2. April 2020, 15:00–15:15, J-HS G
Reconstruction of weakly decaying strange hadrons in Ag+Ag Collisions at √sNN = 2.55 GeV with HADES — •Simon Spies for the HADES collaboration — Goethe-Universität Frankfurt
In the scope of the FAIR Phase 0 program we recorded 13.7 × 109 Ag(1.58A GeV)+Ag events in March 2019 with the HADES detector located at the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt, Germany. In this contribution we discuss the status of the reconstruction of Λ hyperons and KS0 mesons and present first preliminary multi-differential phase space distributions. Both hadrons are produced near their free nucleon nucleon threshold of √s = 2.55 GeV where the excitation functions are steep and a high sensitivity to medium effects is expected. They are reconstructed via the invariant mass of their decay products while the sensitivity is enhanced by exploiting the weak-decay topology with the help of an artificial neural network (ANN).
This work has been supported by BMBF under ErUM-FSP (05P19RFFCA), GSI and HIC for FAIR.