Sterile neutrinos: the dark side of the light fermions

Abstract

The discovery of neutrino masses suggests the likely existence of gauge singlet fermions that participate in the neutrino mass generation via the seesaw mechanism. The masses of the corresponding degrees of freedom can range from well below the electroweak scale to the Planck scale. If some of the singlet fermions are light, the sterile neutrinos appear in the low-energy effective theory. They can play an important role in astrophysics and cosmology. In particular, sterile neutrinos with masses of several keV can account for cosmological dark matter, which can be relatively warm or cold, depending on the production mechanism. The same particles can explain the observed velocities of pulsars because of the anisotropy in their emission from a cooling neutron star born in a supernova explosion. Decays of the relic sterile neutrinos can produce a flux of X-rays that can affect the formation of the first stars. Existing and future X-ray telescopes can be used to search for the relic sterile neutrinos.

54 pages

References in corpus (23)

• Cosmological parameters from combining the Lyman-alpha forest with CMB, galaxy clustering and SN constraints
• Singlet Higgs Phenomenology and the Electroweak Phase Transition
• Sterile neutrinos, dark matter, and the pulsar velocities in models with a Higgs singlet
• Can sterile neutrinos be the dark matter?
• Does the Fornax dwarf spheroidal have a central cusp or core?
• A possible symmetry of the $\nu$MSM
• Pulsar spins from an instability in the accretion shock of supernovae
• What mass are the smallest protohalos?
• Can sterile neutrinos be ruled out as warm dark matter candidates?
• Opening a new window for warm dark matter
• Sterile neutrino dark matter as a consequence of nuMSM-induced lepton asymmetry
• Where to find a dark matter sterile neutrino?
• Relic keV sterile neutrinos and reionization
• Constraints on the parameters of radiatively decaying dark matter from the dark matter halo of the Milky Way and Ursa Minor
• On the hadronic contribution to sterile neutrino production
• Fitting Pulsar Wind Tori. II. Error Analysis and Applications
• Lighting the Universe with filaments
• Sterile neutrinos in the Milky Way: Observational constraints
• Constraining DM through 21 cm observations
• Search for the light dark matter with an X-ray spectrometer
• MeV sterile neutrinos in low reheating temperature cosmological scenarios
• Coherent Active-Sterile Neutrino Flavor Transformation in the Early Universe
• Observed Properties of Dark Matter: dynamical studies of dSph galaxies

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