Computer Physics Communications Program LibraryPrograms in Physics & Physical Chemistry |

[Licence| Download | New Version Template] aexy_v1_0.tar.gz(20640 Kbytes) | ||
---|---|---|

Manuscript Title: Computing decay rates for new physics theories with FeynRules and MadGraph5_aMC@NLO | ||

Authors: Johan Alwall, Claude Duhr, Benjamin Fuks, Olivier Mattelaer, Deniz Gizem Öztürk, Chia-Hsien Shen | ||

Program title: MadWidth | ||

Catalogue identifier: AEXY_v1_0Distribution format: tar.gz | ||

Journal reference: Comput. Phys. Commun. 197(2015)312 | ||

Programming language: Mathematica and Python. | ||

Computer: Platforms on which Mathematica and Python are available. | ||

Operating system: Operating systems on which Mathematica and Python are available. | ||

Keywords: Model building, Feynman rules, Monte Carlo simulations. | ||

PACS: 12.60.Cn, 12.60.Fr, 12.60.Jv. | ||

Classification: 11.1, 11.6. | ||

External routines: FeynRules 2.0 or higher, MadGraph5_aMC@NLO 2.2 or higher. | ||

Nature of problem:The program is a module for the FeynRules and MadGraph5_aMC@NLO packages that allows the computation of tree-level decay widths for arbitrary BSM models. The module consists of two parts: - A FeynRules part, which allows one to compute analytically all tree-level two-body decay rates and to output them in the UFO format.
- A MadGraph5_aMC@NLO part, which allows the numerical computation of many-body decay rates.
| ||

Solution method:- For the FeynRules part, the analytic expressions for the three-point vertices can be squared to obtain analytic formulas for two-body decay rates.
- For the MadGraph5_aMC@NLO part, MadGraph is used to generate all Feynman diagrams contributing to the decay, and diagrams that correspond to cascade decays are removed.
| ||

Restrictions:Mathematica version 7 to 9. As the package is a module relying on FeynRules and MadGraph5_aMC@NLO all restrictions of these packages apply. | ||

Running time:The computation of the Feynman rules from a Lagrangian, as well as the computation of the decay rates, varies with the complexity of the model, and runs from a few seconds to several minutes. See Section 5 of the present manuscript for more information. |

Disclaimer | ScienceDirect | CPC Journal | CPC | QUB |