Perspectives of $e^{+}{e}^{-}$ production in pp, pd and p Be reactions at SIS energies

Abstract

We study dilepton production from pp, pd and p Be collisions from 1 - 5 GeV including the ${\pi }^0$, $\eta$, $\omega$ and $\Delta$ Dalitz decays, direct decays of vector mesons ($\rho$, $\omega$) as well as subthreshold $\rho$ production via baryonic resonances (e.g. $D_{13}(1520),P_{11}(1710)$). Our calculations compare rather well with the pp and pd data from the DLS Collaboration, however, overestimate slightly the 'old' p Be data from that group. Futhermore, detailed predictions for differential dilepton spectra at SIS energies are made with a high mass resolution that can be controlled experimentally by the HADES Collaboration in near future.

27 pages, LaTeX, including 13 postscript figures, to be published in Nucl. Phys. A

Cited by in corpus (20)

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• Origin of the low-mass electron pair excess in light nucleus-nucleus collisions
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• Chiral approach to the rho meson in nuclear matter
• Di-Electron Bremsstrahlung in Intermediate-Energy pn and Dp Collisions
• Dilepton production in heavy ion collisions at intermediate energies
• Role of baryonic resonances in the dilepton emission in nucleon-nucleon collisions
• System Size and Energy Dependence of Dilepton Production in Heavy-Ion Collisions at SIS Energies
• Dilepton production in proton-proton collisions at BEVALAC energies
• Dilepton decays of baryon resonances
• Baryonic contributions to the dilepton spectrum of nucleon-nucleon collisions
• Di-Electrons from Resonances in Nucleon-Nucleon Collisions
• Vector meson angular distributions in proton-proton collisions
• $e^{+}{e}^{-}$ production in $pA$ reactions at SIS energies
• $\rho /\omega$ properties from dilepton spectra in $pA$ reactions at 12 GeV
• Constraints on the kinetic mixing parameter ${\epsilon }^2$ for the light dark photons from dilepton production in heavy-ion collisions in the few-GeV energy range
• Dilepton production in elementary and in heavy ion reactions
• Electroproduction, photoproduction, and inverse electroproduction of pions in the first resonance region
• Dilepton production at SIS energies