First Results with a new Method for calculating 2-loop Box-Functions

Details First Results with a new Method for calculating 2-loop Box-Functions First Results with a new Method for calculating 2-loop Box-Functions

1998-04-20

arxiv.org/abs/hep-ph/9804333v1

Eur.Phys.J.C6:693-699,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, LaTeX2e, 11 eps-figures, needs epsfig.sty

Scientific paper

10.1007/s100520050376

We describe a first attempt to calculate scalar 2-loop box-functions with arbitrary internal masses, applying a novel method proposed in hep-ph/9407234. Four of the eight integrals are accessible to integration by means of the residue theorem, leaving a rational function in the remaining variables. The result of the procedure is a three- or sometimes two-dimensional integral representation over a finite volume that can be further evaluated using numerical methods.

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