Numerical evaluation of phase space integrals by sector decomposition
arXiv:hep-ph/0402265 · doi:10.1016/j.nuclphysb.2004.06.005
Abstract
In a series of papers we have developed the method of iterated sector decomposition for the calculation of infrared divergent multi-loop integrals. Here we apply it to phase space integrals to calculate a contribution to the double real emission part of the e+e- -> 2 jets cross section at NNLO. The explicit cancellation of infrared poles upon summation over all possible cuts of a given topology is worked out in detail for a specific example.
15 pages, 2 figures