SM + Scalars
Author
 Claude Duhr
 IPPP Durham
 claude.duhr@…
Description of the model
This model is an extension of the SM, where a new scalar sector is added. This new sector consists in an O(n) symmetric model that only interacts with itself and with the SM Higgs boson.
The implementation of the model is based on
" The minimal nonminimal Standard Model ", J.J. van der Bij, Phys.Lett.B636:5659,2006, hepph/0603082.
Model files
 SMScalars.fr: This is the main file.
 This model needs the model file of the SM implementation of FeynRules. Note that the width of the Higgs boson in the SM model file needs to be changed.
 SMScalars.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 SMScalars.fr.
The implmentation allows for the use of the Feynman gauge in the SM.The switch between the two gauge is achieved via FeynmanGauge = True/False (see StandardModel).
The number of new scalars in the O(n) symmetric sector can be changed. This can be achieved by changing the variable Nf inside the model file before loading the model. The default value is Nf = 4.
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. All files are in unitary gauge.
SM_Plus_ScalarsCH.tgz  The model files for CalcHep. 
SM_Plus_Scalars_FA.tgz  The model files for FeynArts. 
SM_Plus_Scalars_MG.tgz  The model files for MadGraph 4. 
SM_Plus_Scalars_SH.tgz  The model files for Sherpa. 
SM_Plus_Scalars_UFO.tgz  The model files in UFO format (e.g. for MadGraph 5). 
Attachments (9)

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

SMScalars.fr
(2.8 KB) 
added by claudeduhr 9 years ago.
Model file

SMScalars.nb
(4.8 KB) 
added by claudeduhr 9 years ago.
Sample notebook

SM_Plus_Scalars_FA.tgz
(4.3 KB) 
added by claudeduhr 9 years ago.
FA files

SM_Plus_Scalars_MG.tgz
(9.7 KB) 
added by claudeduhr 9 years ago.
MG4 files

SM_Plus_Scalars_SH.tgz
(3.2 KB) 
added by claudeduhr 9 years ago.
SH files

SM_Plus_Scalars_UFO.tgz
(9.4 KB) 
added by claudeduhr 9 years ago.
UFO files

SM_Plus_ScalarsCH.tgz
(4.7 KB) 
added by claudeduhr 9 years ago.
CH files

SM_Plus_Scalars.pdf
(136.5 KB) 
added by claudeduhr 9 years ago.
TeX file
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