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arXiv · 1111.6534

GoSam: A program for automated one-loop Calculations

G. Cullen·N. Greiner·G. Heinrich·G. Luisoni·P. Mastrolia·G. Ossola·T. Reiter·F. Tramontano
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Abstract

The program package GoSam is presented which aims at the automated calculation of one-loop amplitudes for multi-particle processes. The amplitudes are generated in terms of Feynman diagrams and can be reduced using either D-dimensional integrand-level decomposition or tensor reduction, or a combination of both. GoSam can be used to calculate one-loop corrections to both QCD and electroweak theory, and model files for theories Beyond the Standard Model can be linked as well. A standard interface to programs calculating real radiation is also included. The flexibility of the program is demonstrated by various examples.

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G. Cullen, N. Greiner, G. Heinrich, G. Luisoni, P. Mastrolia, G. Ossola, T. Reiter, F. Tramontano. 2011-11-28. GoSam: A program for automated one-loop Calculations. https://doi.org/10.1088/1742-6596/368/1/012056

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