A Fully Numerical Approach to One-Loop Amplitudes

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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.
31 pages, revised and enlarged manuscript, axodraw.sty needed

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High Energy Physics - Phenomenology

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http://salesiana.dossiersoluciones.com/handle/123456789/170044

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0802.4171
 http://arxiv.org/abs/0802.4171

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arXiv