Polarization for pair annihilation in strong magnetic fields

¹ Department of Physics, Universidad National, Heredia, 86-3000 Costa Rica
² Department of Physics and Astronomy, University of Calgary, Alberta, T2N 1N4, Canada

Send offprint request to: L. Semionova

Received: 18 November 1999
Accepted: 16 March 2000

Abstract

We derive the cross-section for one-quantum annihilation of polarized electrons and positrons. The electron and positron can occupy arbitrary Landau levels and have non-zero momentum parallel to the field, and the cross-section is calculated for any polarization of the radiation. When we take zero parallel momentum for the electron and sum over photon polarization we obtain results which agree with the existing calculation of Wunner et al. (1986).