Feb 5 – 11, 2017
Hyatt Regency Chicago
America/Chicago timezone

Many-body reactions in baryon-antibaryon annihilation including strangeness

Not scheduled
2h 30m
Hyatt Regency Chicago

Hyatt Regency Chicago

151 East Wacker Drive Chicago, Illinois, USA, 60601
Board: D07


Eduard Seifert (University of Giessen)


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, Kaons and pions through all energies, although the influence at lower energies is more pronounced. The effect of the $B \bar B \leftrightarrow 3M$ reactions on the antibaryons rather than the baryons is notable due to the overall lower multiplicities of the antibaryons. For higher energies a significant net annihilation is found.

Preferred Track Baryon-Rich QCD Matter and Astrophysics
Collaboration Not applicable

Primary author

Eduard Seifert (University of Giessen)

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