Can extended duality uniquely explain the dilepton data in HICs at SPS?

Abstract

Extended duality is used to explain the dilepton data of heavy-ion experiments at CERN-SPS. Taking into account the background contributions (hadronic cocktail, Drell-Yan, semileptonic decays of open charm) the spectral shapes of the CERES, NA38/50 and HELIOS-3 data in experiments with lead and sulfur beams can be well described, however, the normalizations of the sulfur beam data are problematic.

talk at the International Workshop XXVIII on Gross Properties of Nuclei and Nuclear Excitations, Hirschegg, Jan. 2000