%0 Journal Article
%T Low-Mass Dileptons at the CERN-SpS: Evidence for Chiral Restoration?
%A R. Rapp
%A J. Wambach
%J Physics
%D 1999
%I arXiv
%R 10.1007/s100500050364
%X Using a rather complete description of the in-medium $\rho$ spectral function - being constrained by various independent experimental information - we calculate pertinent dilepton production rates from hot and dense hadronic matter. The strong broadening of the $\rho$ resonance entails a reminiscence to perturbative $q\bar q$ annihilation rates in the vicinity of the phase boundary. The application to dilepton observables in Pb(158AGeV)+Au collisions - incorporating recent information on the hadro-chemical composition at CERN-SpS energies - essentially supports the broadening scenario. Possible implications for the nature of chiral symmetry restoration are outlined.
%U http://arxiv.org/abs/hep-ph/9907502v1