Radiative Corrections. I. High-Energy Bremsstrahlung and Pair Production

The radiative corrections to the high-energy bremsstrahlung and pair-production spectra are calculated in the Weizs\"acker-Williams approximation. Results for the soft-photon radiative correction to the spectra are given, and for the case of pair production the soft-plus-hard-photon radiative correction is also obtained. The radiative correction to the total pair-production cross section is found to be practically independent of the photon...