Abstract
Helicity amplitudes and the differential cross section of high-energy photoproduction accompanied by bremsstrahlung in the electric field of a heavy atom (i.e., the amplitudes of the process are derived. The results are exact in the nuclear charge number and are obtained in the leading quasiclassical approximation. They correspond to the leading high-energy small-angle asymptotics of the amplitude. It is shown that, in general, accounting for the Coulomb corrections essentially modify the differential cross section, which is different from the Born result. When the initial photon is circularly polarized, the Coulomb corrections lead to the asymmetry in the distribution over the azimuth angles of produced particles with respect to the replacement .
- Received 27 October 2014
DOI:https://doi.org/10.1103/PhysRevA.90.062112
©2014 American Physical Society