Programs in Physics & Physical Chemistry
|[Licence| Download | New Version Template] aedi_v2_1.tar.gz(494 Kbytes)|
|Manuscript Title: Automatic evaluation of UV and R2 terms for beyond the Standard Model Lagrangians: a proof-of-principle|
|Authors: Celine Degrande|
|Program title: FeynRules-2.1 with NLOCT|
|Catalogue identifier: AEDI_v2_1|
Distribution format: tar.gz
|Journal reference: Comput. Phys. Commun. 197(2015)239|
|Programming language: Mathematica.|
|Computer: Platforms on which Mathematica is available.|
|Operating system: Operating systems on which Mathematica is available.|
|Keywords: BSM, Automated one-loop computation, Ultraviolet counterterms, Rational terms.|
|Classification: 11.1, 11.6.|
External routines: FeynArts-3.7 or above
Does the new version supersede the previous version?: Yes
Nature of problem:
The new version of FeynRules renormalises and computes with the new NLOCT package the ultraviolet counterterms and the rational R2 terms induced by one-loop amplitudes. The resulting vertices can be exported in the UFO format to event generators such as MadGraph5_aMC@NLO.
First, the Lagrangian is renormalized in FeynRules and exported to FeynArts through the corresponding interface. Secondly, the NLOCT package computes the R2 and UV vertices using the amplitudes from FeynArts. Finally, the list of NLO vertices is loaded in FeynRules to be exported in the UFO format.
Reasons for new version:
The new version allows the automated generation of any model in the UFO format with all the required ingredients to perform automatically one-loop computation.
Summary of revisions:
This new version contains all the elements to perform the computation of the NLO ingredients: A function to perform the renormalization in FeynRules, the NLOCT package computes of the UV and R2 vertices and the extended UFO interface adds them in the output.
The model should be renormalizable, i.e. the dimension of the operators should not exceed four, and written in the Feynman gauge.
The running time ranges from a few minutes for models like the SM to a few hours for more complicated models like the MSSM.
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