Version 3 (modified by 7 years ago) ( diff ) | ,
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MSSMD Model
Author
Wei Shi
Rice University, weishi[at]rice.edu
Model Description
The model is based on MSSM, but adding a dark sector. The dark sector, U(1)D, is broken, giving rise to light dark photons (γD) that weakly couple to the SM particles via a small kinetic mixing with photons. The lightest neutralino n1 in MSSM is no longer stable and can decay via processes such as n1 → nD + γD, where nD is a light dark neutralino (fermion). In this model, the γD is mediated by very weak interactions with the SM, and can decay to muon pairs promptly or non-promptly.
References
https://link.springer.com/content/pdf/10.1007/JHEP05(2010)077.pdf
Model Files
MSSMD implementation: http://feynrules.irmp.ucl.ac.be/attachment/wiki/MSSMD/MSSMD.fr
Parameter file: http://feynrules.irmp.ucl.ac.be/attachment/wiki/MSSMD/sps1a.dat
Example of a notebook to produce UFO model: http://feynrules.irmp.ucl.ac.be/attachment/wiki/MSSMD/MSSMD.nb
UFO model: http://feynrules.irmp.ucl.ac.be/attachment/wiki/MSSMD/MSSMD_UFO.zip
Validation
The model is validated by checking kinematic distribution plots from the LHE file generated by MadGraph5.
https://github.com/weishi10141993/DarkSUSY_MC_MG5/tree/master/MSSMDarkSector/MG5_0p25_cT_100_LHE
https://github.com/weishi10141993/DarkSUSY_MC_MG5/tree/master/MSSMDarkSector/MG5_8p5_cT_100_LHE
Acknowledgement
The author would like to thank F. Elahi and M. Abdullah for helpful discussions. Thanks to B. Fuks for the help in the implementation. Thanks to O. Mattelaer for help interface with MadGraph5.
Attachments (4)
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MSSMD.fr
(46.0 KB
) - added by 7 years ago.
FeynRule file of the model
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sps1a.dat
(20.9 KB
) - added by 7 years ago.
Parameter file of the model
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MSSMD.nb
(2.1 KB
) - added by 7 years ago.
Example notebook to produce the UFO model used in MadGraph5
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MSSMD_UFO.zip
(2.6 MB
) - added by 7 years ago.
MSSMD UFO model