HQET quark–gluon vertex at one loop

Abstract. We calculate the HQET quark–gluon vertex at one loop, for arbitrary external momenta, in an arbitrary covariant gauge and space-time dimension. Relevant results and algorithms for the three-point HQET integrals are presented. We also show how one can obtain the HQET limit directly from QCD results for the quark–gluon vertex.