== 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 [https://feynrules.irmp.ucl.ac.be 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 [https://cp3.irmp.ucl.ac.be/projects/madgraph/ MadGraph_aMC@NLO] and [http://www.feynarts.de FeynArts] are included.

=== Publication ===
We published a description of this project and the resulting Feynman rules for scalar leptoquarks in [https://arxiv.org/abs/2105.04844 ArXiv:2105.04844]. Please cite this article ([https://inspirehep.net/literature/1862806 Crivellin:2021tmz]) when using any of the contents provided here. 

=== Model files ===
-  [https://feynrules.irmp.ucl.ac.be/attachment/wiki/SLQrules/SLQrules.fr SLQrules.fr]: This is the main model file. It contains the scalar LQ parameters, field definitions as well as the complete Lagrangian. 
-  [https://feynrules.irmp.ucl.ac.be/attachment/wiki/SLQrules/SM.fr SM.fr]: This is the [https://feynrules.irmp.ucl.ac.be FeynRules] SM model file. It is needed to determine the interactions between the LQs and the SM particles. 
-  [https://feynrules.irmp.ucl.ac.be/attachment/wiki/SLQrules/SLQrules.nb SLQrules.nb]: This is an example Mathematica notebook that loads and calculates the Feynman rules and can be used to export the model files. 
-  [https://feynrules.irmp.ucl.ac.be/attachment/wiki/SLQrules/UFO.zip UFO.zip]: This archive contains the model files for [https://cp3.irmp.ucl.ac.be/projects/madgraph/ MadGraph_aMC@NLO] phenomenology studies. 
-  [https://feynrules.irmp.ucl.ac.be/attachment/wiki/SLQrules/FeynArts.zip FeynArts.zip]: This archive contains the model files for [http://www.feynarts.de FeynArts] phenomenology studies.

=== Instructions ===
More information about the [https://feynrules.irmp.ucl.ac.be/attachment/wiki/SLQrules/SLQrules.nb SLQrules.nb] Mathematica notebook can be found [https://gitlab.com/lucschnell/SLQrules/-/blob/master/README.md here], the [https://feynrules.irmp.ucl.ac.be/attachment/wiki/SLQrules/SLQrules.fr SLQrules.fr] model file is discussed in detail [https://gitlab.com/lucschnell/SLQrules/-/blob/master/SLQrules/README.md here].