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.
Cullen, Gavin; Deurzen, Hans van; Greiner, Nicolas; Heinrich, Gudrun; Luisoni, Gionata; Mastrolia, Pierpaolo; Mirabella, Edoardo; Ossola, Giovanni; Peraro, Tiziano; Schlenk, Johannes; von Soden-Fraunhofen, Johann Felix; and Tramontano, Francesco, "GOSAM-2.0: a tool for automated one-loop calculations within theStandard Model and beyond" (2014). CUNY Academic Works.