TTP00-17 Two Loop QCD Vertices and Three Loop MOM $\beta$ functions
TTP00-17 Two Loop QCD Vertices and Three Loop MOM $\beta$ functions
TTP00-17 Two Loop QCD Vertices and Three Loop MOM $\beta$ functions
We present numerical results for the two loop QCD corrections to the
ghost gluon vertex, the quark gluon vertex, and the triple gluon vertex in
the massless limit at the symmetric point. We restrict ourselves to the tensor
structures existing in the tree level. The corrections are used to examine
different coupling constant definitions in momentum subtraction schemes
and the corresponding three-loop $\beta$ functions.
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