Vector-leptoquark model
Authors
- Michael J. Baker
- UZH, Zurich
- baker AT physik.uzh.ch
- Javier Fuentes-Martín
- UZH, Zurich
- fuentes AT physik.uzh.ch
- Gino Isidori
- UZH, Zurich
- isidori AT physik.uzh.ch
- Matthias König
- UZH, Zurich
- koenigma AT physik.uzh.ch
Description of the model
This model is an extension of the SM, featuring a vector leptoquark (U_{1}~(3,2)_{2/3}), a colored vector (G'~(8,1)_{0}), and a Z' (Z'~(1,1)_{0}) as new heavy mediators.
The implementation of the model is based on "High-p_{T} Signatures in Vector-Leptoquark Models" (arXiv:1901.10480). If you use our model file please cite this reference.
Model Files
vector_LQ.fr: This is the Feynrules model file for the vector leptoquark.
coloron.fr: This is the Feynrules model file for the vector color-octect.
Zprime.fr: This is the Feynrules model file for the Z' .
Model Restrictions
Massless.rst: This restriction file sets all the masses and Yukawas to zero, except for the ones of the top quark (necessary to work in the 5 flavour scheme).
Instructions
The model is loaded by merging the model files SM.fr (in StandardModel), vector_LQ.fr, coloron.fr and Zprime.fr. Alternatively, one can exclude the model files coloron.fr or Zprime.fr if the user is not interested in these mediators.
The implementation 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 NP interaction order has been set to 1, the same as QCD.
Examples
model_gen.nb: This is an example Mathematica® notebook that loads the Feynrules model files and calculates the UFO model.
widths.nb: This is an example Mathematica® notebook that loads the Feynrules model files and calculates the Feynman rules and widths of the new vectors.
Interfaces
This model implementation is known to work with the following interfaces:
Validation
An alternative Feynrules implementation for the vector leptoquark model (but with interactions to left-handed third-generation SM fermions only) is available in https://lqnlo.hepforge.org. We have cross-checked our leptoquark implementation (with β_{R}^{33} = 0) against this one, finding a perfect agreement between the two.
UFO model
vector_LQ_UFO.tar.gz: UFO model including the U_{1}, G' and Z' .
Attachments (7)
- vector_LQ.fr (6.5 KB) - added by JavierFuentes 14 months ago.
- coloron.fr (6.8 KB) - added by JavierFuentes 14 months ago.
- Zprime.fr (8.5 KB) - added by JavierFuentes 14 months ago.
- Massless.rst (844 bytes) - added by JavierFuentes 14 months ago.
- model_gen.nb (100.0 KB) - added by JavierFuentes 14 months ago.
- widths.nb (157.8 KB) - added by JavierFuentes 14 months ago.
- vector_LQ_UFO.tar.gz (21.3 KB) - added by JavierFuentes 14 months ago.
Download all attachments as: .zip