A Fully Numerical Approach to One-Loop Amplitudes

Details A Fully Numerical Approach to One-Loop Amplitudes A Fully Numerical Approach to One-Loop Amplitudes

2008-02-28

arxiv.org/abs/0802.4171v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

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

Scientific paper

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.

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