Darmstadt 2016 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
HK: Fachverband Physik der Hadronen und Kerne
HK 10: Heavy Ion Collision and QCD Phases III
HK 10.3: Vortrag
Montag, 14. März 2016, 17:15–17:30, S1/01 A01
Treatment of the ω resonance in transport approaches observed through dilepton production — •Jan Staudenmaier1,2, Janus Weil1, Stephan Endres1,2, and Hannah Petersen1,2,3 — 1Frankfurt Institute for Advanced Studies — 2Goethe University Frankfurt — 3GSI Helmholtzzentrum für Schwerionenforschung
In this talk we discuss the treatment of ω Dalitz decay as well as the effect of the electromagnetic Dalitz decay of N* resonances on the ω spectral function. Both are observed through the dilepton spectrum.
We begin with a presentation of the employed hadronic transport approach called SMASH that is designed to describe the non-equilibrium evolution of hadronic matter in heavy-ion collisions. After explaining the basic principles and foundations of the model, we present the description of dilepton production within SMASH. The main contribution of the dilepton spectra in the energy range of a few AGeV originates from resonance decays. First results of the dilepton production with SMASH including dilepton invariant mass spectra are shown and compared to other transport approaches.
Furthermore we investigate two different treatments of the ω Dalitz decay. The decay is either described as a direct Dalitz decay or via an intermediate ρ meson. Finally we discuss the electromagnetic Dalitz decay of N* resonances via the ω and its effect on the ω spectral function, which is accessible through the dilepton spectrum.