Quark-gluon vertex in arbitrary gauge and dimension

Abstract

One-loop off-shell contributions to the quark-gluon vertex are calculated, in an arbitrary covariant gauge and in arbitrary space-time dimension, including quark-mass effects. It is shown how one can get results for all on-shell limits of interest directly from the off-shell expressions. In order to demonstrate that the Ward-Slavnov-Taylor identity for the quark-gluon vertex is satisfied, we have also calculated the corresponding one-loop contribution involving the quark-quark-ghost-ghost vertex.

50 pages, LaTeX, including 7 figures, uses epsfig

References in corpus (2)

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• Lattice calculation of $1/p^2$ corrections to ${\alpha }_s$ and of ${\Lambda }_{\mathrm{QCD}}$ in the $\widetilde{MOM}$ scheme

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