Deep inelastic scattering
with a tagged photon:
QED corrections for the method
Fachbereich Physik, Siegen University, D-57068 Siegen, Germany
Received: 12 January 1999 / Published online: 22 March 1999
After a brief review of the kinematics of deep inelastic scattering (DIS) within the so-called method, we derive the necessary formulae for the treatment of QED radiative corrections to DIS originating from hard photon radiation. The results are applied to a calculation of the corrections to DIS with a tagged photon with next-to-leading logarithmic accuracy under HERA conditions. It turns out that the next-to-leading logarithmic corrections are quite important for the method. We also discuss the dependence of the corrections on the longitudinal structure function of the proton, FL, in the region of low Q2 and moderate x.