Analytical evaluation of certain on-shell two-loop three-point diagrams ∗
/ Authors
/ Abstract
Abstract An analytical approach is applied to calculating some dimensionally regulated two-loop vertex diagrams with essential on-shell singularities. Such diagrams are important in evaluating the QED corrections to the muon decay, the QCD corrections to top quark decays t→W + b, t→H + b, etc.
Journal: Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment