• Corpus ID: 249926430

Cannibal dark matter decoupled from standard model: cosmological constraints

@inproceedings{Ghosh2022CannibalDM,
  title={Cannibal dark matter decoupled from standard model: cosmological constraints},
  author={Avirup Ghosh and Sourav Gope and Satyanarayan Mukhopadhyay},
  year={2022}
}
An internally thermalized dark matter (DM) with only gravitational interaction with the standard model (SM) particles at low temperatures, may undergo numberchanging self-scatterings in the early Universe, eventually freezing out to the observed DM abundance. If these reactions, such as a 3 → 2 process, take place when the DM is non-relativistic, DM cannibalizes itself to cool much slower than standard non-relativistic matter during the cannibal phase. As shown in earlier studies, if the… 

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