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München 2019 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 35: Heavy-Ion Collisions and QCD Phases VII

HK 35.6: Talk

Wednesday, March 20, 2019, 15:30–15:45, HS 12

Particle Production via Strings and Baryon Stopping in a Hadronic Transport Approach — •Justin Mohs1,2,3, Sangwook Ryu1, and Hannah Elfner1,2,31Frankfurt Institute for Advanced Studies, Ruth-Moufang-Strasse 1, 60438 Frankfurt am Main, Germany — 2Institute for Theoretical Physics, Goethe University, Max-von-Laue-Strasse 1, 60438 Frankfurt am Main, Germany — 3GSI Helmholtzzentrum für Schwerionenforschung, Planckstr. 1, 64291 Darmstadt, Germany

The changing shape of the rapidity spectrum of net protons over the SPS energy range is still lacking theoretical understanding. A model for string excitation and string fragmentation is implemented in order to describe high energy interactions between hadrons within a hadronic transport approach. Free model parameters are tuned to match experimental data for proton-proton collisions. Using the fixed set of parameters we investigate baryon stopping in heavy ion collisions at SPS energies. The interaction of string fragments is of major importance for describing the stopping of baryons. Varying the influence of different parameters of the particle formation, such as formation time or cross section scaling factors, and comparing to experimental data might contribute to a better understanding of the formation process.

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