2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/226634The unitarity method for calculating one-loop amplitudes provides algorithms of polynomial complexity. This is primarily beneficial for the computation of multi-leg one loop amplitudes and it is therefore of great interest to develop a numerical implementation of the unitarity method. We describe a recently-developed, efficient, semi-numerical unitarity method for the computation of the cut-constructible part of one-loop amplitudes.6 pages, talk at the 8th International Symposium on Radiative Corrections (RADCOR) October 1-5 2007, Florence, Italy Florence, Italy}High Energy Physics - Phenomenologytext