Abstract
We compute the master integrals for massless two-loop vertex graphs with three off- shell legs. These master integrals are relevant for the QCD corrections to H ! V ∗ V ∗ (where V = W, Z) and for two-loop studies of the triple gluon (and quark-gluon) vertex. We employ the differential equation technique to provide series expansions in ǫ for the various master integrals. The results are analytic and contain a new class of two-dimensional harmonic polylogarithms.
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