Co-scattering in micrOMEGAs: A case study for the singlet-triplet dark matter modelстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 31 июля 2024 г.
Аннотация: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.