arXiv:hep-ph/9707492·v1·High Energy Physics — Phenomenology
The Differential equation method: calculation of vertex-type diagrams with one non-zero mass
J. Fleischer (Bielefeld U.) · A.V. Kotikov (JINR, Dubna) · O.L. Veretin (Bielefeld U.)
Abstract
The differential equation method is applied to evaluate analytically two-loop vertex Feynman diagrams. Three on-shell infrared divergent planar two-loop diagrams with zero thresholds contributing to the processes Z --> bb bar (for zero b mass) and/or H --> gg are calculated in order to demonstrate a new application of this method.
Comments: 12 pages, LATEX, uses axodray.sty