Di-Electron Bremsstrahlung in Intermediate-Energy pn and Dp Collisions

Abstract

Invariant mass spectra of di-electrons stemming from bremsstrahlung processes are calculated in a covariant diagrammatical approach for the exclusive reaction D p \to p_{\rm sp} n p e^+ e^- with detection of a forward spectator proton, p_{sp}. We employ an effective nucleon-meson theory for parameterizing the sub-reaction n p \to n p e^+ e^- and, within the Bethe-Salpeter formalism, derive a factorization of the cross section in the form {dσ_{D p \to p_{\rm sp} n p e^+ e^-}}/{dM}= {dσ_{n p \to n p e^+ e^-}}/{dM} \times kinematical factor related solely to the deuteron (M is the e^+ e^- invariant mass). The effective nucleon-meson interactions, including the exchange mesons π, σ, ωand ρas well as excitation and radiative decay of Δ(1232), have been adjusted to the process pp \to pp e^+ e^- at energies below the vector meson production threshold. At higher energies, contributions from ωand ρmeson excitations are analyzed in both, NN and Dp collisions. A relation to two-step models is discussed. Subthreshold di-electron production in Dp collisions at low spectator momenta is investigated as well. Calculations have been performed for kinematical conditions envisaged for forthcoming experiments at HADES.

References in corpus (38)

• The high-precision, charge-dependent Bonn nucleon-nucleon potential (CD-Bonn)
• Quantization of an interacting spin-3/2 field and the Delta isobar
• Field theory of nucleon to higher-spin baryon transitions
• Coupled-channel analysis of the $\omega$-meson production in $\pi N$ and $\gamma N$ reactions for c.m. energies up to 2 GeV
• Photoproduction of vector mesons off nucleons near threshold
• 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
• The $\rho$ Spectral Function in a Relativistic Resonance Model
• $pp\to p{K}^{+}\Lambda$ reaction in an effective Lagrangian model
• Dilepton Production in Nucleon-Nucleon Interactions
• Role of baryonic resonances in the dilepton emission in nucleon-nucleon collisions
• Calculations of the Exclusive Processes 2H(e,e'p)n, 3He(e,e'p)2H and 3He(e,e'p)(pn) within a Generalized Glauber Approach
• Production of $\omega$ and $\varphi$ Mesons in Near-Threshold $\pi N$ Reactions: Baryon Resonances and Validity of the OZI Rule
• Combined Analysis of Near-Threshold Production of omega and phi Mesons in Nucleon-Nucleon Collisions within an Effective Meson-Nucleon Model
• Off-shell omega production in proton-proton collisions near threshold
• Near-threshold $\omega$ and $\varphi$ meson productions in $pp$ collisions
• Bethe-Salpeter Amplitudes and Static Properties of the Deuteron
• Electromagnetic Couplings of Nucleon Resonances
• Quantum interference of rho0- and omega-mesons in the pi N -> e+e- N reaction
• Perspectives of $e^{+}{e}^{-}$ production in pp, pd and p Be reactions at SIS energies
• Microscopic Model of the Time Like Electromagnetic Form Factor of the Nucleon
• ${\gamma }^{\ast }N\Delta$ Form Factors from a Relativistic Dynamical Model of Pion Electroproduction
• Formalism for dilepton production via virtual photon bremsstrahlung in hadronic reactions
• A Relativistic Approach to Deep Inelastic Scattering on the Deuteron
• Elastic Proton-Deuteron Backward Scattering: Relativistic Effects and Polarization Observables
• Phi meson production cross sections in pion-baryon and baryon-baryon interactions
• Dilepton Production in Nucleon-Nucleon Reactions With and Without Hadronic Inelasticities
• Deep inelastic scattering on the deuteron in the Bethe-Salpeter formalism II: Realistic $NN$-interaction
• Parametrization of Realistic Bethe-Salpeter Amplitude for the Deuteron
• The effect of electro-magnetic formfactors on dilepton production off pp-collisions
• Vector meson angular distributions in proton-proton collisions
• Transport Dynamics of Broad Resonances
• Lepton-Pair Production in Virtual Compton Scattering off the Proton
• Dilepton and vector meson production in elementary and in heavy ion reactions
• Relativistic Structure of the Deuteron: 1.Electro-disintegration and y-scaling
• Polarization observables in the reaction $pn\to d\varphi$
• Relativistic Description of Exclusive Deuteron Breakup Reactions
• Another Look at ``soft'' lepton pair production in nucleon-nucleon bremsstrahlung

Cited by in corpus (44)

• Hadron properties in the nuclear medium
• Hadrons in strongly interacting matter
• From Kadanoff-Baym dynamics to off-shell parton transport
• Effective QCD and transport description of dilepton and photon production in heavy-ion collisions and elementary processes
• Dilepton production and off-shell transport dynamics at SIS energies
• Origin of the low-mass electron pair excess in light nucleus-nucleus collisions
• Dielectron production in Ar+KCl collisions at 1.76A GeV
• Study of dielectron production in C+C collisions at 1 AGeV
• Dilepton production in proton-induced reactions at SIS energies with the GiBUU transport model
• Dilepton production and reaction dynamics in heavy-ion collisions at SIS energies from coarse-grained transport simulations
• Inclusive dielectron spectra in p+p collisions at 3.5 GeV
• Timelike gamma* N -> Delta form factors and Delta Dalitz decay
• System Size and Energy Dependence of Dilepton Production in Heavy-Ion Collisions at SIS Energies
• Production and evolution path of dileptons at HADES energies
• A versatile method for simulating pp -> ppe+e- and dp -> pne+e-p_spec reactions
• Dilepton production in heavy-ion collisions with in-medium spectral functions of vector mesons
• Dilepton production in proton-proton and quasifree proton-neutron reactions at 1.25 GeV
• Pluto: A Monte Carlo Simulation Tool for Hadronic Physics
• Dilepton Radiation from Strongly Interacting Systems
• On a Possible Explanation of the DLS-Puzzle
• Spectral caustics in laser assisted Breit-Wheeler process
• How Sensitive are Di-Leptons from Rho Mesons to the High Baryon Density Region?
• Di-Electrons from Resonances in Nucleon-Nucleon Collisions
• Resonance Structure in the $\gamma \gamma$ Invariant Mass Spectrum in $p$C- and $d$C-Interactions
• Dilepton production in pion-nucleon collisions in an effective field theory approach
• Electromagnetic Probes
• Analysis of the exclusive final state npe${}^{+}$e${}^{-}$ in quasi-free np reaction
• Dilepton production in nucleon-nucleon collisions reexamined
• Properties of hadrons in a chiral model with (axial-)vector mesons
• Dilepton production in pp and np collisions at 1.25 GeV
• eta-prime Meson Production in Nucleon-Nucleon Collisions Near The Threshold
• 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
• Dielectron Production in C+C Collisions at 1 GeV/u and the Solution to the DLS Puzzle
• Meson and di-electron production with HADES
• $\omega -\pi {\gamma }^{\ast }$ transition form factor in proton-proton collisions
• Gauge-invariant formulation of $NN\to NN\gamma$
• Di-electrons from $\eta$ meson Dalitz decay in proton-proton collisions
• Elementary Collisions with HADES
• Role of scalar dibaryon and $f_0(500)$ in the isovector channel of low-energy neutron-proton scattering
• Dilepton production from SIS to LHC energies
• Baryon octet and decuplet phenomenology in a three-flavor extended linear sigma model
• Omega and Eta (Eta-prime) mesons from NN and ND collisions at intermediate energies
• Dilepton production in nucleon-nucleon collisions around 1 GeV/nucleon: a theoretical update
• Probing resonance matter with virtual photons