Numerical Computation of Two-loop Box Diagrams with Masses

Details Numerical Computation of Two-loop Box Diagrams with Masses Numerical Computation of Two-loop Box Diagrams with Masses

2011-12-03

arxiv.org/abs/1112.0637v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, 8 figures

Scientific paper

A new approach is presented to evaluate multi-loop integrals, which appear in the calculation of cross-sections in high-energy physics. It relies on a fully numerical method and is applicable to a wide class of integrals with various mass configurations. As an example, the computation of two-loop planar and non-planar box diagrams is shown. The results are confirmed by comparisons with other techniques, including the reduction method, and by a consistency check using the dispersion relation.

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