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تسجيل مستخدم جديدDilepton Production in Transport-based Approaches
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We investigate dilepton production in transport-based approaches and show that the baryon couplings of the $rho$ meson represent the most important ingredient for understanding the measured dilepton spectra. At low energies (of a few GeV), the baryon resonances naturally play a larger role and affect already the vacuum spectra via Dalitz-like contributions, which can be captured well in an on-shell-transport scheme. At higher energies, the baryons mostly affect the in-medium self energy of the $rho$, which is harder to tackle in transport models and requires advanced techniques.
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We investigate dilepton production in transport-based approaches and show that the baryon couplings of the $rho$ meson represent the most important ingredient for understanding the measured dilepton spectra. At SIS energies, the baryon resonances nat
urally play a major role and affect already the vacuum spectra via Dalitz-like contributions, which can be captured well in transport simulations. Recent pion-beam measurements at GSI will help to constrain the properties of the involved resonances further.
We present dilepton spectra from nucleus-nucleus collisions at SIS energies, which were simulated with the GiBUU transport model in a resonance-model approach. These spectra are compared to the data published by the HADES collaboration. We argue that
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