Eta and dilepton production in heavy-ion reactions

Gy Wolf, W. Cassing, U. Mosel

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Abstract

We present a nonperturbative dynamical study of η-meson and pion production in heavy-ion collisions from 1 to 2 GeV/A bombarding energy. The dynamical evolution of the nucleus-nucleus collision is described by a transport equation of the Boltzmann-Uehling-Uhlenbeck type evolving phase-space distribution functions for nucleons, Δ's, N(1440)'s, N(1535)'s, pions and η′s with their isospin degrees of freedom. Furthermore, we present results for differential dilepton yields in heavy-ion collisions at bombarding energies of 1 and 2 GeV/A incorporating all known sources for dilepton production. We investigate in particular the sensitivity of the calculated yields to predicted changes of the ρ-meson in dense matter and discuss the feasibility to measure the time-like electromagnetic form factor of hadrons and their medium-dependence through the observation of dileptons.

Original languageEnglish
Pages (from-to)549-570
Number of pages22
JournalNuclear Physics, Section A
Volume552
Issue number4
DOIs
Publication statusPublished - Feb 22 1993

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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