| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1845100 | Nuclear Physics B - Proceedings Supplements | 2008 | 6 Pages |
Abstract
The use of complex analysis for computing one-loop scattering amplitudes is naturally induced by generalised unitarity-cut conditions, fulfilled by complex values of the loop variable. We report on two techniques: the cut-integration with spinor-variables as contour integrals of rational functions; and the use of the Discrete Fourier Transform to optimize the reduction of tensor-integrals to master scalar integrals.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
