The method originally developed for the exact calculations in QED theory is applied for the calculation of NLO effects in QCD Compton processes. QCD corrections to the structure functions and sum rules are obtained. Different interpretations of the NLO effects due to finite quark mass are discussed.
@article{arxiv.hep-ph/0101126,
title = {Next-to-leading order mass effects in QCD Compton process of polarized DIS},
author = {I. Akushevich and A. Ilyichev and N. Shumeiko},
journal= {arXiv preprint arXiv:hep-ph/0101126},
year = {2014}
}