Higher Electromagnetic Corrections to Electron-Proton Scattering

Higher order electromagnetic corrections to the electron-proton scattering amplitudes are studied. The scattering amplitude is subjected to a dispersion analysis which permits the $e^4$ contribution to be written as the sum of two terms. The first corresponds to radiative corrections to the form factors, the second to virtual photon Compton scattering by the proton. A simple model is constructed for the resonant contribution to Compton scattering which is shown to correct the form factor analysis negligibly up to ∼1 Bev for all scattering angles.