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Probing in-medium vector meson decays by double-differential di-electron spectra in heavy-ion collisions at SIS energies

Wolf, G.; Kämpfer, B.; Pavlenko, O. P.


Within a transport code simulation for heavy-ion collisions at bombarding energies around 1 AGeV we demonstrate that double-differential di-electron spectra with suitable kinematical cuts are useful to isolate (i) the ρ meson peak even in case of strong broadening, and (ii) the in-medium ω decay contribution. The expected in-medium modifications of the vector meson spectral densities can thus b probed in this energy range via the di-electron channel.

Keywords: heavy-ion collisions; di-electrons; in-medium modifications of vector mesons


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