Speaker
Gyorgy Wolf
(KFKI-RMKI)
Description
We calculate electron-positron pair production in pion-nucleon and pion-nucleus collisions. Parameters of the model are fitted to pion photoproduction data. We use these cross sections in a transport model to study π-nucleus reactions. We investigate especially what is the effect of the interference between the ρ and ω mesons on the dilepton spectra. . We suggest a way how experimentally the decoherence can be measured in the medium, comparing π-N, π-light nucleus and π-heavy nucleus. These results are meant to give predictions for the planned experiments at the HADES spectrometer in GSI, Darmstadt. These reactions may be studied in JPARC, too.
Primary author
Gyorgy Wolf
(KFKI-RMKI)
