e^+e^- production from pp reactions at BEVALAC energies

Abstract

We have performed a detailed study of dilepton production from pp collisions including the subthreshold $\rho$ production via baryonic resonances (N(1520), N(1700)) in addition to the conventional dilepton sources as ${\pi }^0,\eta ,\omega$ and $\Delta$ Dalitz decays and direct decays of vector mesons ($\rho ,\omega$). The role of baryonic resonances in $\rho$ production from nucleon-nucleon collisions is studied in comparison to the DLS data which are well described.

19 pages, revtex, including 7 postscript figures, to be published in Nucl. Phys. A

References in corpus (14)

• Current correlation functions, QCD sum rules and vector mesons in baryonic matter
• Rho Meson Propagation and Dilepton Enhancement in Hot Hadronic Matter
• Dielectron Cross Section Measurements in Nucleus-Nucleus Reactions at 1.0 A GeV
• The Spectral Function of the Rho Meson in Nuclear Matter
• What QCD sum rules tell about the rho meson
• P-Wave Polarization of the $\rho$-Meson and the Dilepton Spectrum in Dense Matter
• Intermediate mass excess of dilepton production in heavy ion collisions at BEVALAC energies
• Inclusive Dielectron Cross Sections in p+p and p+d Interactions at Beam Energies from 1.04 to 4.88 GeV
• Probing the Rho Spectral Function in Hot and Dense Nuclear Matter by Dileptons
• Dilepton production and $m_T$-scaling at BEVALAC/SIS energies
• Low-mass dileptons and dropping rho meson mass
• Formalism for dilepton production via virtual photon bremsstrahlung in hadronic reactions
• Probing nuclear expansion dynamics with ${\pi }^{-}/{\pi }^{+}$-spectra
• Medium Dependence of the Vector-Meson Mass: Dynamical and/or Brown-Rho Scaling?

Cited by in corpus (19)

• Excitation functions of hadronic observables from SIS to RHIC energies
• Dilepton production and reaction dynamics in heavy-ion collisions at SIS energies from coarse-grained transport simulations
• Dilepton production in proton-induced reactions at SIS energies with the GiBUU transport model
• Role of baryonic resonances in the dilepton emission in nucleon-nucleon collisions
• Production and evolution path of dileptons at HADES energies
• Dilepton production in proton-proton and quasifree proton-neutron reactions at 1.25 GeV
• Perspectives of $e^{+}{e}^{-}$ production in pp, pd and p Be reactions at SIS energies
• Dilepton production in proton-proton collisions at BEVALAC energies
• ${\gamma }^{\ast }N\to N^{\ast }(1520)$ form factors in the timelike regime
• Dilepton decays of baryon resonances
• Baryonic contributions to the dilepton spectrum of nucleon-nucleon collisions
• Dilepton production in pion-nucleon collisions in an effective field theory approach
• Covariant model for the Dalitz decay of the $N(1535)$ resonance
• Rho^0 meson production in the pp ->pppi+pi- reaction at 3.67 GeV/c
• Dilepton production in elementary and in heavy ion reactions
• Absorption of $\omega$ and $\varphi$ mesons in the inclusive photonuclear reaction
• Forward coherent $\omega$ and $\varphi$ mesons production in the photon induced reaction on nuclei
• $\rho N$ resonance dynamics in the proton nucleus reaction
• Dilepton and $\varphi$ meson production in elementary and nuclear collisions at the NICA fixed target experiment