Large momentum expansion of two-loop self-energy diagrams with arbitrary masses

Preprint

30 July 1993

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/9307371

Abstract

For two-loop two-point diagrams with arbitrary masses, an algorithm to derive the asymptotic expansion at large external momentum squared is constructed. By using a general theorem on asymptotic expansions of Feynman diagrams, the coefficients of the expansion are calculated analytically. For some two-loop diagrams occurring in the Standard Model, comparison with results of numerical integration shows that our expansion works well in the region above the highest physical threshold.

Keywords

DIAGRAMS WITH ARBITRARY
NUMERICAL INTEGRATION
ASYMPTOTIC EXPANSION
MOMENTUM EXPANSION
ARBITRARY MASSES
ENERGY DIAGRAMS
LARGE MOMENTUM
STANDARD MODEL
ALGORITHM
TWO LOOP

All Related Versions

Version 1, 1993-07-30, ArXiv
Published version: Nuclear Physics B, 410 (2), 325.

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