Journalartikel

Jahr der Veröffentlichung: 1991

Seiten: R1501-R1503

Zeitschrift: Physical Review C

Bandnummer: 43

Heftnummer: 4

ISSN: 0556-2813

eISSN: 1089-490X

DOI Link: https://doi.org/10.1103/PhysRevC.43.R1501

Verlag: American Physical Society

Abstract: 

Dilepton production is studied in heavy-ion collisions at bombarding energies from 60 to 400 MeV/nucleon. The dynamical evolution of the nucleus-nucleus collisions is described by a transport equation of the Vlasov-Uehling-Uhlenbeck type including explicitly pion and Δ(1232) degrees of freedom and considering free on-shell production processes. We calculate the contribution of proton-neutron bremsstrahlung, π0 and Δ Dalitz decay, and π+π− annihilation. At 60 MeV/nucleon bombarding energy proton-neutron bremsstrahlung dominates while around 100 MeV/nucleon most of the 𝑒+𝑒− cross section arises from π0 decay. At 400 MeV/nucleon, however, the Δ Dalitz decay is the most important dilepton source for invariant masses M>140 MeV thus offfering the possibility to study in-medium properties of this resonance.

Harvard-Zitierstil: Wolf, G., Cassing, W., Mosel, U. and Schäfer, M. (1991) Dilepton production at intermediate-energy heavy-ion collisions, Physical Review C, 43(4), pp. R1501-R1503. https://doi.org/10.1103/PhysRevC.43.R1501

APA-Zitierstil: Wolf, G., Cassing, W., Mosel, U., & Schäfer, M. (1991). Dilepton production at intermediate-energy heavy-ion collisions. Physical Review C. 43(4), R1501-R1503. https://doi.org/10.1103/PhysRevC.43.R1501