SLQrules

Author

• Luc Schnell (luschnel_at_student.ethz.ch)
  • LPTHE, Sorbonne Université et CNRS
  • ETH Zürich
  • École Polytechnique de Paris

Description

This project contains the complete set of Feynman rules for all five scalar leptoquarks, implemented in ​FeynRules. We include the LQ-LQ-Higgs(-Higgs) interactions and the resulting LQ mass eigenstates, the couplings to the SM gauge bosons and fermions as well as the LQ-LQ-LQ(-Higgs) and LQ-LQ-LQ-LQ interactions. The Mathematica notebook to determine and export the Feynman rules as well as the model files for ​MadGraph_aMC@NLO and ​FeynArts are included.

Publication

We published a description of this project and the resulting Feynman rules for scalar leptoquarks in ​ArXiv:2105.04844. Please cite this article (​Crivellin:2021tmz) when using any of the contents provided here.

Model files

• ​SLQrules.fr: This is the main model file. It contains the scalar LQ parameters, field definitions as well as the complete Lagrangian.
• ​SM.fr: This is the ​FeynRules SM model file. It is needed to determine the interactions between the LQs and the SM particles.
• ​SLQrules.nb: This is an example Mathematica notebook that loads and calculates the Feynman rules and can be used to export the model files.
• ​UFO.zip: This archive contains the model files for ​MadGraph_aMC@NLO phenomenology studies.
• ​FeynArts.zip: This archive contains the model files for ​FeynArts phenomenology studies.

Instructions

More information about the ​SLQrules.nb Mathematica notebook can be found ​here, the ​SLQrules.fr model file is discussed in detail ​here.