Emission of soft bremsstrahlungγ-rays in p + p → p + p +γ and π?+p → π0+n +γ reactions

Low's theorem 1] on the emission of soft -rays is applied to a study of p + p p+p+ and ^– + p ⁰+ n + reactions. The first two terms in the expansion of the differential cross sections for these processes in powers of the photon energy are obtained (for proton scattering in the ultrarelativistic limit).In conclusion, we wish to express our gratitude to S. M. Bilen'kii and R. M. Ryndin for directing this work.