Simplified Models for Coannihilating Dark Matter

This is a set of simplified models for coannihaliting dark matter based on 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 Simplified Phenomenology for Colored Dark Sectors and the UFO files can be generated using the FR-CDS package.


The implementation of the models has been done by

  • Anna Kaminska (JGU Mainz, akaminsk@…)
  • Maikel de Vries (JGU Mainz, mdevrie@…)
  • Felix Yu (JGU Mainz, yu-001@…)
  • José Zurita (KIT Karlsruhe, jose.zurita@…)

in collaboration with Michael Baker, Joachim Brod, Malte Buschmann, Sonia El Hedri, Joachim Kopp, Jia Liu, Andrea Thamm, Xiao-Ping Wang and Felix Yu.

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): $\mathrm{DM} \equiv (1,1,0)_\mathrm{M} \qquad \mathrm{X} \equiv (3,2,\tfrac{7}{3})_\mathrm{F} \qquad \mathrm{M}_s \equiv (3,2,\tfrac{7}{3})_\mathrm{S}$
  • Triplet diquark model (dq3_met): $\mathrm{DM} \equiv (1,1,0)_\mathrm{M} \qquad \mathrm{X} \equiv (3,1,-\tfrac{2}{3})_\mathrm{F} \qquad \mathrm{M}_s \equiv (3,1,-\tfrac{2}{3})_\mathrm{S}$
  • Sextet diquark model (dq6_met): $\mathrm{DM} \equiv (1,1,0)_\mathrm{M} \qquad \mathrm{X} \equiv (6,1,\tfrac{8}{3})_\mathrm{F} \qquad \mathrm{M}_s \equiv (6,1,\tfrac{8}{3})_\mathrm{S}$
  • Scalar octet model (so_met): $\mathrm{DM} \equiv (1,1,0)_\mathrm{M} \qquad \mathrm{X} \equiv (8,2,1)_\mathrm{F} \qquad \mathrm{M}_s \equiv (8,2,1)_\mathrm{S}$

A more detailed description for each of the models including validation for MadGraph and Micromegas/MadDM is available in the manual (pdf).


These models files work with and have been tested for several programs. The UFO output has been tested to work with MadGraph 5 and MadDM. As well as the CalcHEP model files which have been tested to work with MicrOMEGAs. See the manual for more details.


Model Files

All of the FeynRules model files below need the SM implementation of FeynRules.

Last modified 14 months ago Last modified on Jul 6, 2017 11:58:20 PM

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