Explicit results for all orders of the epsilon-expansion of certain massive and massless diagrams

Preprint

4 October 1999

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/9910224

Abstract

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.

Keywords

MASSLESS DIAGRAMS
EPSILON EXPANSION
EXPLICIT RESULTS
ARBITRARY VALUES
ARBITRARY TERM
REGULATED
TWO LOOP
LOG SINE

All Related Versions

Version 1, 1999-10-04, ArXiv
Published version: Physical Review D, 61 (8), 087701.

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