%0 Journal Article
%T Explicit results for all orders of the epsilon-expansion of certain massive and massless diagrams
%A A. I. Davydychev
%J Physics
%D 1999
%I arXiv
%R 10.1103/PhysRevD.61.087701
%X An arbitrary term of the epsilon-expansion of dimensionally regulated off-shell massless one-loop three-point Feynman diagram is expressed in terms of log-sine integrals related to the polylogarithms. Using magic connection between these diagrams and two-loop massive vacuum diagrams, the epsilon-expansion of the latter is also obtained, for arbitrary values of the masses. The problem of analytic continuation is also discussed.
%U http://arxiv.org/abs/hep-ph/9910224v1