Scattering of Polarized Dirac Particles on Electrons

Abstract

The cross section for electron-electron scattering in which the incident and target electrons have arbitrary spin orientations has been evaluated. For the special case in which the spin of the incident electron is polarized along the direction of motion, two different spin effects are obtained. The first of these effects is simply a dependence of the cross section on the relative spin orientation; the second effect corresponds to an up-down asymmetry in the cross section. Similar effects have been obtained for the scattering of polarized positrons on polarized electrons.