Dilepton Production in Transport-based Approaches

Hot Quarks 2014: Workshop for young scientists on the physics of ultrarelativistic nucleus-nucleus collisions

Weil, Janus^1 ; Endres, Stephan^1 ; Van Hees, Hendrik^1 ; Bleicher, Marcus^1 ; Mosel, Ulrich^2

Frankfurt Institute for Advanced Studies, Ruth-Moufang-Str. 1, Frankfurt

60438, Germany^1

Institut für Theoretische Physik, JLU Giessen, Heinrich-Buff-Ring 16, Giessen

35392, Germany^2

关键词: Baryon resonances;    Beam measurements;    Dilepton production;    Dileptons;    Transport simulation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/612/1/012039/pdf
DOI  :  10.1088/1742-6596/612/1/012039

来源: IOP

【 摘 要 】

We investigate dilepton production in transport-based approaches and show that the baryon couplings of the ρ meson represent the most important ingredient for understanding the measured dilepton spectra. At SIS energies, the baryon resonances naturally 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.