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arXiv · 1203.2137

Angular distribution of high-energy $e^+e^-$ photoproduction close to the end of spectrum

A. Di Piazza·A. I. Milstein
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Abstract

We consider the differential cross section of electron-positron pair production by a high-energy photon in a strong Coulomb field close to the end of the electron or positron spectrum. When the momentum transfer largely exceeds the electron mass, the cross section is obtained analytically in a compact form. Coulomb corrections essentially modify the cross section even for moderate values of the nuclear charge number $Z$. In the same kinematical region, the angular distribution for bound-free pair production, bremsstrahlung, and photorecombination is also obtained.

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A. Di Piazza, A. I. Milstein. 2012-03-09. Angular distribution of high-energy $e^+e^-$ photoproduction close to the end of spectrum. https://doi.org/10.1103/physreva.85.042107

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