THE DIFFERENTIAL EQUATION METHOD : CALCULATION OF VERTEX-TYPE DIAGRAMS WITH ONE NON-ZERO MASS
/ Authors
/ Abstract
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→b b (for zero b mass) and/or H→gg are calculated in order to demonstrate a new application of this method.
Journal: Physics Letters B