Bethe-Heitler process in polarized photon-nucleon interactions

T. Gehrmann, M. Stratmann
1997 Physical Review D, Particles and fields  
We calculate the Bethe-Heitler cross section for the production of lepton pairs in the field of a longitudinally polarized nucleon, taking into account the lepton masses and the target mass. This process is a dominant background to the detection of open charm from semi-leptonic decay modes, which is a potential probe of the polarized gluon distribution in the nucleon.
doi:10.1103/physrevd.56.5839 fatcat:sauux5eduzf2xes772dlfyjixi