Isoscalar-Isovector Interferences in $\pi N\to N{e}^{+}{e}^{-}$ Reactions as a Probe of Baryon Resonance Dynamics

Abstract

The isoscalar-isovector ($\rho -\omega$) interferences in the exclusive reactions ${\pi }^{-}p\to n{e}^{+}{e}^{-}$ and ${\pi }^{+}n\to p{e}^{+}{e}^{-}$ near the $\omega$ threshold leads to a distinct difference of the dielectron invariant mass distributions depending on beam energy. The strength of this effect is determined by the coupling of resonances to the nucleon vector-meson channels and other resonance properties. Therefore, a combined analysis of these reactions can be used as a tool for determining the baryon resonance dynamics.

Cited by in corpus (12)

• Kaon production in heavy ion reactions at intermediate energies
• Inclusive dielectron spectra in p+p collisions at 3.5 GeV
• Dilepton production in heavy ion collisions at intermediate energies
• Quantum interference of rho0- and omega-mesons in the pi N -> e+e- N reaction
• Spectral caustics in laser assisted Breit-Wheeler process
• Role of baryon resonances in the ${\pi }^{-}p\to n{e}^{+}{e}^{-}$ reaction within an effective-Lagrangian model
• $\omega -\pi {\gamma }^{\ast }$ transition form factor in proton-proton collisions
• Dilepton production in elementary and in heavy ion reactions
• Electroproduction, photoproduction, and inverse electroproduction of pions in the first resonance region
• In-medium modification and decay asymmetry of omega mesons in cold nuclear matter
• Baryon Resonance Dynamics in pi N \to N V Reactions Near Threshold
• The $\pi N\to e^{+}{e}^{-}N$ reaction close to the vector meson production threshold