Scale setting in QCD and the momentum flow in Feynman diagrams
Scale setting in QCD and the momentum flow in Feynman diagrams
We present a formalism to evaluate QCD diagrams with a single virtual gluon using a running coupling constant at the vertices. This method, which corresponds to an all-order resummation of certain terms in a perturbative series, provides a description of the momentum flow through the gluon propagator. It can be …