Numerical evaluation of multi-loop integrals for arbitrary kinematics with SecDec 2.0
High Energy Physics - Phenomenology
2015-03-20 v2
Abstract
We present the program SecDec 2.0 which contains various new features: First, it allows the numerical evaluation of multi-loop integrals with no restriction on the kinematics. Dimensionally regulated ultraviolet and infrared singularities are isolated via sector decomposition, while threshold singularities are handled by a deformation of the integration contour in the complex plane. As an application we present numerical results for various massive two-loop four-point diagrams. SecDec 2.0 also contains new useful features for the calculation of more general parameter integrals, related e.g. to phase space integrals.
Cite
@article{arxiv.1204.4152,
title = {Numerical evaluation of multi-loop integrals for arbitrary kinematics with SecDec 2.0},
author = {Sophia Borowka and Jonathon Carter and Gudrun Heinrich},
journal= {arXiv preprint arXiv:1204.4152},
year = {2015}
}
Comments
34 pages, 11 figures, replaced by published version