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arXiv · 1410.4206

Dilepton Production in Transport-based Approaches

Janus Weil·Stephan Endres·Hendrik van Hees·Marcus Bleicher·Ulrich Mosel
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Abstract

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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Janus Weil, Stephan Endres, Hendrik van Hees, Marcus Bleicher, Ulrich Mosel. 2014-10-15. Dilepton Production in Transport-based Approaches. https://doi.org/10.3204/desy-proc-2014-04%2F173

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