Computing decay rates for new physics theories with FeynRules and MadGraph 5_aMC@NLO
Journal
Computer Physics Communications
Journal Volume
197
Start Page
312
End Page
323
ISSN
0010-4655
Date Issued
2015-12
Author(s)
Abstract
We present new features of the FeynRules and MadGraph 5-aMC@NLO programs for the automatic computation of decay widths that consistently include channels of arbitrary final-state multiplicity. The implementations are generic enough so that they can be used in the framework of any quantum field theory, possibly including higher-dimensional operators. We extend at the same time the conventions of the Universal FeynRules Output (or UFO) format to include decay tables and information on the total widths. We finally provide a set of representative examples of the usage of the new functions of the different codes in the framework of the Standard Model, the Higgs Effective Field Theory, the Strongly Interacting Light Higgs model and the Minimal Supersymmetric Standard Model and compare the results to available literature and programs for validation purposes.
Publisher
Elsevier BV
Type
journal article