  The FeynArts model file MSSMdreg2dred.mod implements MSSM transition
counterterms which can convert one-loop Green functions from dimensional
regularization to dimensional reduction. They correspond to a slight extension
of the well-known Martin/Vaughn counterterms, specialized to the MSSM, and can
serve also as supersymmetry-restoring counterterms. The paper provides full
analytic results for the counterterms and gives one- and two-loop usage
examples. The model file can simplify combining MSbar-parton distribution
functions with supersymmetric renormalization or avoiding the renormalization
of epsilon-scalars in dimensional reduction.
