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HK: Fachverband Physik der Hadronen und Kerne
HK 5: Heavy-Ion Collisions and QCD Phases II
HK 5.2: Vortrag
Montag, 30. März 2020, 17:00–17:15, J-HS G
Multi-particle reactions in hadronic transport approaches — •Jan Staudenmaier2,3 and Hannah Elfner1,2,3 — 1GSI Helmholtzzentrum für Schwerionenforschung, Planckstr. 1, 64291 Darmstadt — 2Institut für Theoretische Physik, Johann Wolfgang Goethe-Universität, Max-von-Laue-Str. 1, 60438 Frankfurt am Main — 3Frankfurt Institute for Advanced Studies (FIAS), Ruth-Moufang-Straße 1, 60438 Frankfurt am Main
Nucleus-nucleus collisions at intermediate energies are in progress at BES-II and will also be explored by upcoming experiments at FAIR and NICA. Such collisions offer an unique opportunity to study high particle densities. In such conditions multi-particle reactions are expected to become relevant. Hadronic transport approaches, however, usually only treat binary scatterings, which, in addition, also breaks detailed balance for baryon anti-baryon annihilations and decays of resonances with more than two particles in the final state.
In this talk, a stochastic scattering criterion that allows for a straight forward treatment of multi-particle reactions is presented. The hadronic transport approach named SMASH is extended to include this stochastic criterion. Infinite matter calculations are used to study the scattering rate and detailed balance for the treatment in a systematic way. Furthermore, first results for nucleus-nucleus collisions employing the stochastic criterion are shown.