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We present the version 2.0 of the program pack-ageGoSamfor the automated calculation of one-loop ampli-tudes.GoSamis devised to compute one-loop QCD and/orelectroweak corrections to multi-particle processes withinand beyond the Standard Model. The new code containsimprovements in the generation and in the reduction of theamplitudes, performs better in computing time and numer-ical accuracy, and has an extended range of applicability.The extended version of the “Binoth-Les-Houches-Accord”interface to Monte Carlo programs is also implemented. Wegive a detailed description of installation and usage of thecode, and illustrate the new features in dedicated examples.


This article was originally published in the European Physics Journal C, available at DOI 10.1140/epjc/s10052-014-3001-5.

This article is distributed under the terms of the Creative Commons Attribution License (CC BY 4.0) which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.



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