Journalartikel

Jahr der Veröffentlichung: 1997

Seiten: 832-854

Zeitschrift: Nuclear Physics A: Nuclear and Hadronic Physics

Bandnummer: 625

Heftnummer: 4

ISSN: 0375-9474

Open Access Status: Green

DOI Link: https://doi.org/10.1016/S0375-9474(97)00471-5

Verlag: Elsevier

Abstract: 
The omega-, rho-, and phi-resonance production and their dileptonic decay in pi(-)A reactions at 1.1-1.7 GeV/c are calculated within the intranuclear cascade (INC) approach. The invariant mass distribution of the dilepton pair for each resonance can be decomposed in two components which correspond to their decay ''inside'' the target nucleus and in the vacuum, respectively. The first components are strongly distorted by the nuclear medium due to resonance-nucleon scattering and a possible mass shift at finite baryon density. These medium modifications are compared to background sources in the dilepton spectrum from pi N bremsstrahlung as well as the Dalitz decays of omega and eta mesons produced in the reaction, Detailed predictions for pi(-)Pb reactions at 1.3 and 1.7 GeV/c are made within several momentum bins for the lepton pair. (C) 1997 Elsevier Science B.V.

Harvard-Zitierstil: Golubeva, Y., Kondratyuk, L. and Cassing, W. (1997) Medium effects in the production and decay of vector mesons in pion-nucleus reactions, Nuclear Physics A: Nuclear and Hadronic Physics, 625(4), pp. 832-854. https://doi.org/10.1016/S0375-9474(97)00471-5

APA-Zitierstil: Golubeva, Y., Kondratyuk, L., & Cassing, W. (1997). Medium effects in the production and decay of vector mesons in pion-nucleus reactions. Nuclear Physics A: Nuclear and Hadronic Physics. 625(4), 832-854. https://doi.org/10.1016/S0375-9474(97)00471-5