Low-Mass $e^+e^-$ Pairs from in-Medium $\rho$ Meson Propagation - IN2P3 - Institut national de physique nucléaire et de physique des particules
Communication Dans Un Congrès Année : 1998

Low-Mass $e^+e^-$ Pairs from in-Medium $\rho$ Meson Propagation

R. Rapp
  • Fonction : Auteur
J. Wambach
  • Fonction : Auteur

Résumé

Based on a realistic model for the rho meson in free space we investigate it's medium modifications in a hot hadron gas generated by hadronic rescattering processes, i.e. renormalization of intermediate two-pion states as well as direct rho meson scattering off hadrons. Within the vector dominance model the resulting in-medium rho spectral function is applied to calculate $e^+e^-$ spectra as recently measured in heavy-ion collisions at CERN-SpS energies in the CERES experiment.

Dates et versions

in2p3-00003415 , version 1 (06-11-1998)

Identifiants

Citer

R. Rapp, G. Chanfray, J. Wambach. Low-Mass $e^+e^-$ Pairs from in-Medium $\rho$ Meson Propagation. International Workshop on Gross Properties of Nuclei and Nuclear Excitations: QCD Phase Transitions 25, Jan 1997, Hirschegg, Austria. pp.192-200. ⟨in2p3-00003415⟩
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