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Transport calculation of dilepton production at ultrarelativistic energies

C. Ernst·S. A. Bass·S. Soff·H. Stöcker·W. Greiner
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Abstract

Dilepton spectra are calculated within the microscopic transport model UrQMD and compared to data from the CERES experiment. The invariant mass spectra in the region 300 MeV < M < 600 MeV depend strongly on the mass dependence of the $ρ$ meson decay width which is not sufficiently determined by the Vector Meson Dominance model. A consistent explanation of both the recent Pb+Au data and the proton induced data can be given without additional medium effects.

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C. Ernst, S. A. Bass, S. Soff, H. Stöcker, W. Greiner. 1999-07-30. Transport calculation of dilepton production at ultrarelativistic energies. https://arxiv.org/abs/nucl-th/9907118

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