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 topquark loop through which the higgs couples to gluons and photons. The corresponding effective theory for a pseudoscalar 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.
 HiggsEffective.nb : This is an example Mathematica notebook that loads the model and calculates Feynman rules.
 The Feynman rules and the particle content are summarized in the following pdf file.
Instructions
The model is loaded by merging the model files SM.fr and HiggsEffective.fr.
The implementation allows for the use of the Feynman gauge in the SM. Feynman gauge is not supported for this model.
Matrix element generator files
Below we give tarballs containing the model files generated by FeynRules for the various matrix element generaotrs for which a FeynRules interface exists. All fermion masses are put to zero, except for the top, the bottom and the Tau lepton masses.
Higgs_Effective_CouplingsCH.tgz  The model files for CalcHep. 
Higgs_Effective_Couplings_FA.tgz  The model files for FeynArts. 
Higgs_Effective_Couplings_MG.tgz  The model files for MadGraph 4. 
Higgs_Effective_Couplings_UFO.tgz  The model files in UFO format (e.g. for MadGraph 5). 
Attachments (8)

HiggsEffective.tex
(9.0 KB) 
added by claudeduhr 10 years ago.
TeX file containing the model and the Feynman rules

HiggsEffective.fr
(1.4 KB) 
added by claudeduhr 9 years ago.
Model file

HiggsEffective.nb
(5.1 KB) 
added by claudeduhr 9 years ago.
Sample notebook

Higgs_Effective_Couplings_FA.tgz
(4.7 KB) 
added by claudeduhr 9 years ago.
FA files

Higgs_Effective_Couplings_MG.tgz
(9.8 KB) 
added by claudeduhr 9 years ago.
MG4 files

Higgs_Effective_CouplingsCH.tgz
(5.0 KB) 
added by claudeduhr 9 years ago.
CH files

Higgs_Effective_Couplings_UFO.tgz
(9.6 KB) 
added by claudeduhr 9 years ago.
UFO files

Higgs_Effective_Couplings.pdf
(145.9 KB) 
added by claudeduhr 9 years ago.
TeX file
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