Dilepton production at intermediate-energy heavy-ion collisions

G. Wolf, W. Cassing, U. Mosel, M. Schäfer

Research output: Contribution to journalArticle

11 Citations (Scopus)

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 (1232) degrees of freedom and considering free on-shell production processes. We calculate the contribution of proton-neutron bremsstrahlung, 0 and Dalitz decay, and 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 0 decay. At 400 MeV/nucleon, however, the 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.

Original languageEnglish
JournalPhysical Review C - Nuclear Physics
Volume43
Issue number4
DOIs
Publication statusPublished - 1991

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ionic collisions
bremsstrahlung
decay
neutrons
nuclei
proton energy
energy
pions
degrees of freedom
collisions
protons
cross sections

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics

Cite this

Dilepton production at intermediate-energy heavy-ion collisions. / Wolf, G.; Cassing, W.; Mosel, U.; Schäfer, M.

In: Physical Review C - Nuclear Physics, Vol. 43, No. 4, 1991.

Research output: Contribution to journalArticle

Wolf, G. ; Cassing, W. ; Mosel, U. ; Schäfer, M. / Dilepton production at intermediate-energy heavy-ion collisions. In: Physical Review C - Nuclear Physics. 1991 ; Vol. 43, No. 4.
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