Reducing full one-loop amplitudes to scalar integrals at the integrand level
High Energy Physics - Phenomenology
2008-11-26 v2
Abstract
We show how to extract the coefficients of the 4-, 3-, 2- and 1-point one-loop scalar integrals from the full one-loop amplitude of arbitrary scattering processes. In a similar fashion, also the rational terms can be derived. Basically no information on the analytical structure of the amplitude is required, making our method appealing for an efficient numerical implementation
Cite
@article{arxiv.hep-ph/0609007,
title = {Reducing full one-loop amplitudes to scalar integrals at the integrand level},
author = {Giovanni Ossola and Costas G. Papadopoulos and Roberto Pittau},
journal= {arXiv preprint arXiv:hep-ph/0609007},
year = {2008}
}
Comments
updated version