Asymmetries in Extended Dark Sectors: A Cogenesis Scenario
arXiv:2301.13238 · doi:10.1007/JHEP05(2023)049
Abstract
The observed dark matter relic abundance may be explained by different mechanisms, such as thermal freeze-out/freeze-in, with one or more symmetric/asymmetric components. In this work we investigate the role played by asymmetries in determining the yield and nature of dark matter in non-minimal scenarios with more than one dark matter particle. In particular, we show that the energy density of a particle may come from an asymmetry, even if the particle is asymptotically symmetric by nature. To illustrate the different effects of asymmetries, we adopt a model with two dark matter components. We embed it in a multi-component cogenesis scenario that is also able to reproduce neutrino masses and the baryon asymmetry. In some cases, the model predicts an interesting monochromatic neutrino line that may be searched for at neutrino telescopes.
41 pages, 10 figures, 6 tables; v2: Matches published version
References in corpus (23)
- Leptogenesis
- Asymmetric Dark Matter
- The Dawn of FIMP Dark Matter: A Review of Models and Constraints
- Big Bang Nucleosynthesis Constraints on Hadronically and Electromagnetically Decaying Relic Neutral Particles
- From the trees to the forest: a review of radiative neutrino mass models
- Asymmetric Dark Matter from Leptogenesis
- Multi-Component Dark Matter
- Unbroken B-L Symmetry
- Aidnogenesis via Leptogenesis and Dark Sphalerons
- Cold keV dark matter from decays and scatterings
- Model-Independent Bound on the Dark Matter Lifetime
- Multicomponent Dark Matter from Gauge Symmetry
- Cosmic Coincidence and Asymmetric Dark Matter in a Stueckelberg Extension
- Prospects for discovering a neutrino line induced by dark matter annihilation
- Asymmetric Dark Matter May Not Be Light
- Gauged Inverse Seesaw from Dark Matter
- Minimal Dark Matter and Leptogenesis
- Dark matter from a complex scalar singlet: The role of dark CP and other discrete symmetries
- Multi-component Dark Sectors: Symmetries, Asymmetries and Conversions
- Towards Cogenesis via Asymmetric Freeze-in: The Who Came-in from the Cold
- Baryogenesis and Dark Matter from Freeze-In
- Mechanism for baryogenesis via feebly interacting massive particles
- Leptogenesis from a feebly interacting dark matter sector