The dawn of FIMP Dark Matter: A review of models and constraints
Universidad Antonio Nariño · University of Warsaw · +4 more institutions
Abstract
We present an overview of scenarios where the observed Dark Matter (DM) abundance consists of Feebly Interacting Massive Particles (FIMPs), produced nonthermally by the so-called freeze-in mechanism. In contrast to the usual freeze-out scenario, frozen-in FIMP DM interacts very weakly with the particles in the visible sector and never attained thermal equilibrium with the baryon–photon fluid in the early Universe. Instead of being determined by its annihilation strength, the DM abundance depends on the decay and annihilation strengths of particles in equilibrium with the baryon–photon fluid, as well as couplings in the DM sector. This makes frozen-in DM very difficult but not impossible to test. In this…
Citation impact
- FWCI
- 88.85
- Percentile
- 100%
- References
- 594
Authors
5- NBNicolás BernalCorresponding
Universidad Antonio Nariño, University of Warsaw
- MHMatti Heikinheimo
University of Helsinki, Helsinki Institute of Physics
- TTTommi Tenkanen
Queen Mary University of London
- KTKimmo Tuominen
University of Helsinki, Helsinki Institute of Physics
- VVVille Vaskonen
National Institute of Chemical Physics and Biophysics
Topics & keywords
- Physics
- Dark matter
- Annihilation
- Universe
- Thermal equilibrium
- Particle physics
- Photon
- Baryon
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