Asymmetric dark matter from leptogenesis
By A. Falkowski, J. Ruderman, T. Volansky. 2011
231 citations recorded by the source corpus.
We present a new realization of asymmetric dark matter in which the dark matter and lepton asymmetries are generated simultaneously through two-sector leptogenesis. The right-handed neutrinos couple both to the Standard Model and to a hidden sector where the dark matter resides. This framework explains the lepton asymmetry, dark matter abundance and neutrino masses all at once. In contrast to previous realizations of asymmetric dark matter, the model allows for a wide range of dark matter masses, from keV to 10 TeV. In particular, very light dark matter can be accommodated without violating experimental constraints. We discuss several variants of our model that highlight interesting phenomenological possibilities. In one, late decays repopulate the symmetric dark matter component, providing a new mechanism for generating a large annihilation rate at the present epoch and allowing for mixed warm/cold dark matter. In a second scenario, dark matter mixes with the active neutrinos, thus presenting a distinct method to populate sterile neutrino dark matter through leptogenesis. At late times, oscillations and dark matter decays lead to interesting indirect detection signals.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/4377811fdf12ddeb727c8e112514852d619c3cba
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Citations in the corpus
- Constraining light dark matter with diffuse X-ray and gamma-ray observations (2013, background): “, non-thermal production [8] or due to an extended Higgs sector [95, 96].”
- Melanopogenesis: dark matter of (almost) any mass and baryonic matter from the evaporation of primordial black holes weighing a ton (or less) (2018, methodology): “eferences therein). In the plots, we use gX = 25 and = 0:1. 3.2.3 Asymmetric Dark Matter Finally, we consider a simple incarnation of asymmetric dark matter, inspired by the scenario detailed in Ref. [39]. Schematically, the Standard Model is augmented with a dark-sector scalar eld ˚and a Dirac ferm”
- Double-Disk Dark Matter (2013, background): “The idea of asymmetric dark matter has inspired many proposals for how the dark matter and baryon abundances may be related [64–74], and similar considerations could explain the amount of DDDM.”