Soft-Photon Theory of Nucleon-Nucleon Bremsstrahlung

Abstract

As a consequence of a soft-photon theorem, part of the amplitude for nucleon-nucleon bremsstrahlung depends only on phase parameters measurable in elastic $N-N$ scattering and on the static electromagnetic properties of the nucleon. The corresponding cross section is computed in a fully covariant and gauge-independent fashion, and is found to be in quantitative agreement with most of the existing experimental data.