DOI 10.1007/s100529800947
First results with a new method
for calculating 2-loop box-functions
R. Kreckel - D. Kreimer - K. Schilcher
Johannes Gutenberg-Universität, Institut für Physik / WA ThEP, D-55099 Mainz, Germany
Received: 7 May 1998 / Published online: 21 August 1998
Abstract
We describe a first attempt to calculate scalar 2-loop box-functions
with arbitrary internal masses, applying a novel method proposed
in [#!hepph9407234!#]. 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.
Copyright Springer-Verlag
