Münster 2017 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 58: Heavy Ion Collisions and QCD Phases XI

HK 58.2: Talk

Friday, March 31, 2017, 14:30–14:45, F 1

Many-body reactions in baryon-antibaryon annihilation including strangeness — •Eduard Seifert and Wolfgang Cassing — Intitut für Theoretische Physik, JLU Gießen, Deutschland

We study the impact of baryon-antibaryon annihilation into three mesons on heavy-ion collisions. The reactions are based on the quark rearrangement model in the light and strange sector. Box simulations with periodic boundary conditions confirm that our implementation of these reactions fulfills the detailed balance relation on a channel by channel basis. We implement these reactions into the Parton Hadron String Dynamics (PHSD) transport model and investigate their importance for different bombarding energies in Pb+Pb and Au+Au collisions. We find a significant impact on antibaryons as their total abundance is low and sensitive to the introduced reactions.