= Simplified Models for Coannihilating Dark Matter =
This is a set of simplified models for coannihaliting dark matter based on [http://arxiv.org/abs/1510.03434 The Coannihilation Codex]. Each of the models includes a dark matter candidate, a coannihilation partner and a mediator in various representations of {{{SU(3)xSU(2)xU(1)}}}. These models with minimal particle content provide a way to design generic collider searches for coannihilation, whose results can then be applied to more specific models. Another set of simplified models where the mediator is integrated out and X is colored have been presented in [https://arxiv.org/abs/1703.00452 Simplified Phenomenology for Colored Dark Sectors] and the UFO files can be generated using the [https://github.com/MDT-Maikel/FR-CDS FR-CDS] package.

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== Authors ==
The implementation of the models has been done by
* Anna Kaminska (JGU Mainz, akaminsk@uni-mainz.de)
* Maikel de Vries (JGU Mainz, mdevrie@uni-mainz.de)
* Felix Yu (JGU Mainz, yu-001@uni-mainz.de)
* José Zurita (KIT Karlsruhe, jose.zurita@kit.edu)
in collaboration with Michael Baker, Joachim Brod, Malte Buschmann, Sonia El Hedri, Joachim Kopp, Jia Liu, Andrea Thamm, Xiao-Ping Wang and Felix Yu.

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== Model Description ==
Each of the models introduces three new fields: DM (dark matter candidate), X (coannihilation partner), M (s- or t-channel mediator).
Currently the set of models comprises:
* Leptoquark model (lq_met):
{{{
#!latex
$\mathrm{DM} \equiv (1,1,0)_\mathrm{M} \qquad \mathrm{X} \equiv (3,2,\tfrac{7}{3})_\mathrm{F} \qquad \mathrm{M}_s \equiv (3,2,\tfrac{7}{3})_\mathrm{S}$ 
}}}
* Triplet diquark model (dq3_met):
{{{
#!latex
$\mathrm{DM} \equiv (1,1,0)_\mathrm{M} \qquad \mathrm{X} \equiv (3,1,-\tfrac{2}{3})_\mathrm{F} \qquad \mathrm{M}_s \equiv (3,1,-\tfrac{2}{3})_\mathrm{S}$ 
}}}
* Sextet diquark model (dq6_met):
{{{
#!latex
$\mathrm{DM} \equiv (1,1,0)_\mathrm{M} \qquad \mathrm{X} \equiv (6,1,\tfrac{8}{3})_\mathrm{F} \qquad \mathrm{M}_s \equiv (6,1,\tfrac{8}{3})_\mathrm{S}$ 
}}}
* Scalar octet model (so_met):
{{{
#!latex
$\mathrm{DM} \equiv (1,1,0)_\mathrm{M} \qquad \mathrm{X} \equiv (8,2,1)_\mathrm{F} \qquad \mathrm{M}_s \equiv (8,2,1)_\mathrm{S}$ 
}}}
A more detailed description for each of the models including validation for !MadGraph and Micromegas/MadDM is available in the [http://feynrules.irmp.ucl.ac.be/attachment/wiki/SimplifiedDM/res_met_manual.pdf manual (pdf)].

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== Interfaces ==
These models files work with and have been tested for several programs. The [http://feynrules.irmp.ucl.ac.be/attachment/wiki/SimplifiedDM/ufo_models.tar.gz UFO output] has been tested to work with [https://launchpad.net/mg5amcnlo MadGraph 5] and [https://launchpad.net/maddm MadDM]. As well as the [http://theory.sinp.msu.ru/~pukhov/calchep.html CalcHEP] [http://feynrules.irmp.ucl.ac.be/attachment/wiki/SimplifiedDM/calchep_models.tar.gz model files] which have been tested to work with [https://lapth.cnrs.fr/micromegas/ MicrOMEGAs]. See the [http://feynrules.irmp.ucl.ac.be/attachment/wiki/SimplifiedDM/res_met_manual.pdf manual] for more details.

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== References ==
* [https://arxiv.org/abs/1510.03434]: ''The Coannihilation Codex'', overview of all simplified models and discussion of leptoquark coannihilation phenomenology.
* [https://arxiv.org/abs/1605.08056]: ''Hunting for Dark Matter Coannihilation by Mixing Dijet Resonances and Missing Transverse Energy'', discussion of triplet diquark coannihilation phenomenology. 
* [https://arxiv.org/abs/1703.00452]: '' Simplified Phenomenology for Colored Dark Sectors'', simplified models with just a DM candidate and a colored coannihilation partner.

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== Model Files ==
All of the !FeynRules model files below need the [wiki:StandardModel SM implementation] of !FeynRules.
* [http://feynrules.irmp.ucl.ac.be/attachment/wiki/SimplifiedDM/lq_met.fr lq_met.fr]: leptoquark model file.
* [http://feynrules.irmp.ucl.ac.be/attachment/wiki/SimplifiedDM/dq3_met.fr dq3_met.fr]: triplet diquark model file.
* [http://feynrules.irmp.ucl.ac.be/attachment/wiki/SimplifiedDM/dq6_met.fr dq6_met.fr]: sextet diquark model file.
* [http://feynrules.irmp.ucl.ac.be/attachment/wiki/SimplifiedDM/so_met.fr so_met.fr]: scalar octet model file.
* [http://feynrules.irmp.ucl.ac.be/attachment/wiki/SimplifiedDM/resonance_met.nb resonance_met.nb]: Mathematica notebook which generates the model files (UFO and CalcHEP).
* [http://feynrules.irmp.ucl.ac.be/attachment/wiki/SimplifiedDM/ufo_models.tar.gz ufo_models.tar.gz]: UFO files for all of the above models.
* [http://feynrules.irmp.ucl.ac.be/attachment/wiki/SimplifiedDM/calchep_models.tar.gz calchep_models.tar.gz]: CalcHEP files for all of the above models.