Intermediate mass dilepton production in heavy ion collisions at 200-A/GeV
May, 1998Citations per year
Abstract:
Through the analysis of HELIOS-3 data obtained at the CERN SPS, we demonstrate the importance of secondary processes for dilepton production in heavy-ion collisions in the intermediate invariant mass region. We find that while the dilepton spectra between 1 to 2.5 GeV from proton-induced reactions can be attributed to the decay of primary vector mesons, charmed hadrons, and initial Drell-Yan processes; the strong enhancement seen in the heavy-ion data as compared to the background comes mainly from the secondary processes which are germane to heavy-ion collisions. Furthermore, we find to be the most important process in this mass region, as was found by thermal rate calculations. We emphasize the constraints on the elementary cross sections by the experimental data from annihilation.- scattering: heavy ion
- sulfur
- tungsten
- lepton: pair production
- mass spectrum: dilepton
- p nucleus: nuclear reaction
- nuclear reaction: model
- a1(1260)
- numerical calculations: interpretation of experiments
- 200 GeV/nucleon
References(0)
Figures(0)
Loading ...