arXiv:hep-ph/9606244·v1·High Energy Physics — Phenomenology
Small-threshold behaviour of two-loop self-energy diagrams: some special cases
F.A. Berends🇳🇱 · A.I. Davydychev🇳🇱 · V.A. Smirnov🇳🇱
Abstract
An algorithm to construct analytic approximations to two-loop diagrams describing their behaviour at small non-zero thresholds is discussed. For some special cases (involving two different-scale mass parameters), several terms of the expansion are obtained.
Comments: 7 pages, plain latex; talk given at DESY-Zeuthen Workshop "QCD and QED in Higher Order", Rheinsberg, April 1996, to appear in Proceedings