TL;DR
This paper computes two-loop off-shell vertex functions for triple gluon, ghost-gluon, and quark-gluon interactions in QCD within the MSbar scheme, covering arbitrary linear covariant gauges in the chiral limit.
Contribution
It provides the first detailed two-loop off-shell vertex functions for multiple QCD interactions in a general gauge, advancing precision calculations.
Findings
Explicit two-loop vertex functions in MSbar scheme.
Results applicable to arbitrary linear covariant gauges.
Enhances accuracy of QCD perturbative computations.
Abstract
We calculate the triple gluon, ghost-gluon and quark-gluon vertex functions at two loops in the MSbar scheme in the chiral limit for an arbitrary linear covariant gauge when the external legs are all off-shell.
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