%0 Journal Article
%T Transport calculation of dilepton production at ultrarelativistic energies
%A C. Ernst
%A S. A. Bass
%A S. Soff
%A H. St£¿cker
%A W. Greiner
%J Physics
%D 1999
%I arXiv
%X 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 $\rho$ 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.
%U http://arxiv.org/abs/nucl-th/9907118v1