Co-scattering in micrOMEGAs: a case study for the singlet-triplet dark matter model

Abstract

In scenarios with very small dark matter (DM) couplings and small mass splittings between the DM and other dark sector particles, so-called "co-scattering" or "conversion-driven freeze-out" can be the dominant mechanism for DM production. We present the inclusion of this mechanism in micrOMEGAs together with a case study of the phenomenological implications in the fermionic singlet-triplet model. For the latter, we focus on the transition between co-annihilation and co-scattering processes. We observe that co-scattering is needed to describe the thermal behaviour of the DM for very small couplings, opening up a new region in the parameter space of the model. The triplet states are often long-lived in this region; we therefore also discuss LHC constraints from long-lived signatures obtained with SModelS.

22 pages, 11 figures; typos corrected

References in corpus (7)

• Gauge Singlet Scalars as Cold Dark Matter
• The Well-Tempered Neutralino
• micrOMEGAs4.1: two dark matter candidates
• Constraining new physics with SModelS version 2
• Dark Matter Abundance from Sequential Freeze-in Mechanism
• Coscattering in next-to-minimal dark matter and split supersymmetry
• WIMP and FIMP dark matter in the inert doublet plus singlet model

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• Constraints on the Inert Doublet Model of dark matter with very high-energy gamma-ray observatories
• Impact of conversion-driven processes on singlet-doublet Majorana dark matter relic
• Gravitational Wave Probe of Singlet-Doublet Dark Matter Induced Radiative Neutrino Mass
• Reviving $Z^{\prime }$ Portal Dark Matter with Conversion Mechanism