The Higgs effective theory

Author

• Claude Duhr
  • IPPP Durham
  • claude.duhr@…

Description of the model

This model describes the effective coupling of the Higgs boson to gluons and photons. The effective theory is obtained by integrating out the top-quark loop through which the higgs couples to gluons and photons. The corresponding effective theory for a pseudo-scalar is also included.

The values of the effective couplings correspond to those given in the heft model of the MadGraph/MadEvent distribution.

References

• " Gluon final states in higgs boson decay ", T.G. Rizzo, Phys. Rev., vol. D22, p. 178, 1980
• " Production of a higgs pseudoscalar plus two jets in hadronic collisions ", R.P. Kauffman and S.V. Desai, Phys. Rev., vol. D59, p.057504, 1999
• " Amplitudes for higgs bosons plus four partons ", R.P. Kauffman and S.V. Desai and D. Risal, 1999

Model files

• ​HiggsEffective.fr This is the main file.
• This model needs the model file of the SM implementation of FeynRules.

<a name="Instructions"></a> Instructions

The model is loaded by merging the model files SM.fr and HiggsEffective.fr (the two files must be stored in the same directory, see the [:UserManual:user manual]).

The implementation allows for the use of the Feynman gauge in the SM. Feynman gauge is not supported for this model.

<a name="Examples"></a> Examples

• ​HiggsEffective.nb : This is an example Mathematica® notebook that loads the model and calculates Feynman rules.
• ​HiggsEffective.tex : This is TeX output written by FeynRules.