Studying hadron properties in baryonic matter with HADES
Kugler, A. and Fabbietti, L. and others
Keywords
relativistic heavy ion collisions, nuclear medium, hadrons
Abstract
The HADES spectrometer installed at GSI Darmstadt is a second generation experiment to study production of lepton pairs from proton, pion and nucleus induced reactions at the SIS/BEVALAC energy regime. The HADES study of the light C_s16C system at 1 a nd 2 AGeV confirms former finding of the DLS collaboration. Further studies of the reaction p_s16p and d_s16p allowed to reveal contribution to the above mentioned data of di-leptons produced during first chance collision. Finally, the results of the study of h eavier system Ar_s16KCl indicates possible nonlinear dependence of the observed excess over the known long lived sources of di-leptons on the number of participants.
