Version 10 (modified by 13 years ago) ( diff ) | ,
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SM + new DY resonances
We consider new spin-0, 1, and 2 resonances that can contribute to the s-channel Drell-Yan processes p,p->l+,l-,X and p,p->l,v,X where l is a charged lepton, v is a neutrino or antineutrino and X is the inclusive hadronic remnants. We implement the most general Lagrangian between these new bosons and the SM fermions and gluons allowed by Lorentz, quantum chromodynamic and electromagnetic invariance. In each case, we only include the leading effective terms which are either dimension-4 or dimension-5 operators. Furthermore, we drop all terms which vanish when the masses of the initial-state and final-state particles are taken to zero. Further details can be found in the reference below.
Implementation Author
- Neil Christensen
- University of Wisconsin - Madison
- neil@…
in collaboration with Cheng-Wei Chiang, Gui-Jun Ding, and Tao Han.
References
- Coming soon.
Model Files
- DY-SM-FR.tgz: FeynRules Model Files
Model Implementation
Details about this implementation can be found in the reference above. Additionally, the FeynRules automatic output for this model can be found here:
- DY-SM.pdf: Fields, parameters, Lagrangians and Vertices.
Instructions
We provide a basic notebook giving examples of how to run the FeynRules interfaces on this model. Before running the notebook, the user must change $FeynRulesPath to the path of FeynRules on their computer and the user must change $ModelDir to the path to the DY-SM FeynRules model files downloaded from here:
Interfaces
This model implementation is known to work with CalcHEP. The CalcHEP files can be found here:
This model also runs with MadGraph 5 but has not been thoroughly tested. the files can be found here:
Validation
The Feynman rules were computed by hand and compared with the FeynRules vertices and found to agree. Furthermore, the squared amplitudes for several Drell-Yan processes were calculated by hand and compared with the analytic output of CalcHEP and found to agree. Hermiticity of the Lagrangian was also tested at the Feynman rules level.
Attachments (6)
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SMplus.nb.gz
(23.9 KB
) - added by 13 years ago.
FeynRules Mathematica notebook that runs on the SM-DY model files. Just change the paths.
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SM-DY.pdf
(241.0 KB
) - added by 13 years ago.
Automatic FeynRules pdf output for model.
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DY-SM.pdf
(149.7 KB
) - added by 13 years ago.
automatic FeynRules pdf output for model.
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dy_sm_fr.tgz
(75.7 KB
) - added by 13 years ago.
MadGraph 5 files (UFO files)
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DY-SM-FR.tgz
(10.9 KB
) - added by 13 years ago.
FeynRules model files.
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SM-DY-CH.tgz
(16.1 KB
) - added by 13 years ago.
CalcHEP model files
Download all attachments as: .zip