One-loop results for the quark-gluon vertex in arbitrary dimension
  Results on the one-loop quark-gluon vertex with massive quarks are reviewed, in an arbitrary covariant gauge and in arbitrary space-time dimension. We show how it is possible to get on-shell results from the general off-shell expressions. The corresponding Ward-Slavnov-Taylor identity is discussed. 
A.I. Davydychev (Mainz), P. Osland (Bergen), L. Saks (Bergen)