The Differential equation method: calculation of vertex-type diagrams with one non-zero mass
J. Fleischer, A. V. Kotikov, O. L. Veretin
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.
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