A Fully Numerical Approach to One-Loop Amplitudes
High Energy Physics - Phenomenology
2008-09-29 v2
Abstract
We suggest a new approach for the automatic and fully numerical evaluation of one-loop scattering amplitudes in perturbative quantum field theory. We use suitably formulated dispersion relations to perform the calculation as a convolution of tree-level amplitudes. This allows to take advantage of the iterative numerical algorithms for the evaluation of leading order matrix elements.
Cite
@article{arxiv.0802.4171,
title = {A Fully Numerical Approach to One-Loop Amplitudes},
author = {M. Moretti and F. Piccinini and A. D. Polosa},
journal= {arXiv preprint arXiv:0802.4171},
year = {2008}
}
Comments
31 pages, revised and enlarged manuscript, axodraw.sty needed