A numerical approach to infrared divergent multi-parton phase space integrals

Abstract

It is described how the method of sector decomposition can serve to disentangle overlapping infrared singularities, in particular those occurring in the calculation of the real emission part of e+e- to 2 jets and e+e- to 3 jets at NNLO.

Comments: 5 pages, contribution to the proceedings of the conference "Loops and Legs in Quantum Field Theory", Zinnowitz, Germany, April 25-30, 2004