Consistent off-shell $\pi NN$ vertex and nucleon self-energy

Abstract

We present a consistent calculation of half-off-shell form factors in the pion-nucleon vertex and the nucleon self-energy. Numerical results are presented. Near the on-shell point the pion-nucleon vertex is dominated by the pseudovector coupling, while at large nucleon invariant masses we find a sizable pseudoscalar admixture.

23 pages, 7 figures, REVTeX, submitted to Phys. Rev. C, replaced with corrected version

References in corpus (4)

• Production of $\omega$-mesons in proton-proton collisions
• Pion and photon couplings of N* resonances from scattering on the proton
• Nucleon-nucleon bremsstrahlung: An example of the impossibility of measuring off-shell amplitudes
• On electromagnetic off-shell effects in proton-proton bremsstrahlung

Cited by in corpus (10)

• Form factors and photoproduction amplitudes
• Compton scattering on the nucleon at intermediate energies and polarizabilities in a microscopic model
• Solution of the Bethe-Salpeter equation for pion-nucleon scattering
• Near-threshold $\omega$ and $\varphi$ meson productions in $pp$ collisions
• Compton scattering in a unitary approach with causality constraints
• Effect of form factors in fits to photoproduction data
• Dressing the nucleon in a dispersion approach
• Low-energy Compton scattering on the nucleon and sum rules
• Pion-nucleon amplitude near threshold: the sigma-term and scattering lengths beyond few loops
• Two-Pion Exchange in Proton-Proton Scattering