The role of sterile neutrinos in cosmology and astrophysics

Abstract

We present a comprehensive overview of an extension of the Standard Model that contains three right-handed (sterile) neutrinos with masses below the electroweak scale [the Neutrino Minimal Standard Model, (nuMSM)]. We consider the history of the Universe from the inflationary era through today and demonstrate that most of the observed phenomena beyond the Standard Model can be explained within the framework of this model. We review the mechanism of baryon asymmetry of the Universe in the nuMSM and discuss a dark matter candidate that can be warm or cold and satisfies all existing constraints. From the viewpoint of particle physics the model provides an explanation for neutrino flavor oscillations. Verification of the nuMSM is possible with existing experimental techniques.

The journal version, supplemented by additional references and expanded discussion

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• keV Sterile Neutrino Dark Matter and Low Scale Leptogenesis
• Lepton mass and mixing in a simple extension of the Standard Model based on T7 flavor symmetry
• Potential of LOFT telescope for the search of dark matter
• Heavy sterile neutrino in dark matter searches
• Constraints on freeze-in dark matter from Lyman-$\alpha$ forest and 21-cm signal : single-field models
• DGP brane cosmology and quark-hadron phase transition
• Neutrino induced reactions in core-collapse supernovae: effects on the electron fraction
• All-sky limits on Sterile Neutrino Galactic Dark Matter obtained with SRG/ART-XC after two years of operations
• On the collider-testability of the type-I seesaw model with 3 right-handed neutrinos
• Globular clusters vs dark matter haloes in strong lensing observations
• Long-Lived Particles and the Quiet Sun
• New constraints on sterile neutrino dark matter from the Galactic Center
• Search for a heavy neutral lepton that mixes predominantly with the tau neutrino
• On the impact of heavy meson production spectra on searches for heavy neutral leptons
• Charged lepton mixing via heavy sterile neutrinos
• Signatures of Compact Halos of Sterile-Neutrino Dark Matter
• No Hiding in the Dark: Cosmological Bounds on Heavy Neutral Leptons with Dark Decay Channels
• New emission line at ~3.5 keV - observational status, connection with radiatively decaying dark matter and directions for future studies
• A Model of the Matter-antimatter Asymmetry and Cold Dark Matter with $U(1{)}_{B-L}\otimes U(1{)}_D$
• Production of GeV-scale heavy neutral leptons in 3-body decays. Comparison with the PYTHIA approach
• Fat brane and seesaw mechanism in extra dimensions
• Observing the very low-surface brightness dwarfs in a deep field in the VIRGO cluster: constraints on Dark Matter scenarios
• Decaying Dark Matter in Halos of Primordial Black Holes
• Helical magnetic fields via baryon asymmetry
• Neutrinos in the Early Universe, Kalb-Ramond Torsion and Matter-Antimatter Asymmetry
• New Signal of Atmospheric Tau Neutrino Appearance: Sub-GeV Neutral-Current Interactions in JUNO
• Lyman-$\alpha$ limit on axion-like cold dark matter
• Neutrino interactions in liquid scintillators including active-sterile neutrino mixing
• DESI forecast for Dark Matter-Neutrino interactions using EFTofLSS
• Tree-level unitarity constraints on heavy neutral leptons
• Subdominant Dark Matter sterile neutrino resonant production in the light of Planck
• Decay of $B^{\pm }\to {\tau }^{\pm }+$ "missing momentum" and direct measurement of the mixing parameter $U_{\tau N}$
• Search for GeV-scale sterile neutrinos responsible for active neutrino oscillations and baryon asymmetry of the Universe
• Phenomenological implications of sterile neutrinos in the $\mu \nu$SSM and dark matter
• Exploring Ultralight Scalar Assistance in Sterile Neutrino Dark Matter: Cold Spectrum and Unusual X/Gamma-ray Signatures
• Searching for Particle Dark Matter with eROSITA Early Data
• Constraining sterile neutrinos with a low energy beta-beam
• Dark matter, supernova neutrinos and other backgrounds in direct dark matter searches. The ANDES laboratory prospects
• Phenomenology of Sterile Neutrinos
• Forecasting Constraints on Non-Thermal Light Massive Relics from Future CMB Experiments (CMB-S4/Simons Observatory)
• Opening up New Parameter Space for Sterile Neutrino Dark Matter
• Dimensional Reduction without Extra Continuous Dimensions
• Constraints on Heavy Neutral Leptons interacting with a singlet scalar
• Search for heavy neutral leptons in decays of W bosons produced in 13 TeV pp collisions using prompt signatures in the ATLAS detector
• Status and Perspectives of Neutrino Physics
• Theoretical and phenomenological consequences of active and sterile neutrino within Beyond Standard Model framework
• Neutrino mixing in nuclear rapid neutron-capture processes
• Dark Matter and Torsion
• New model of density distribution for fermionic dark matter halos
• U(1)${}_{B-L}$ Symmetry Restoration and Effective Neutrino Species
• Is it possible to unify three kinds of Dark Matters into a Kaluza-Klein Neutrino?
• Low Scale Leptogenesis from Non-Leptonic CP-Phases
• Astrophysical Constraints on Dark Matter
• Neutrino oscillation in the presence of background classical sources
• Modeling Dark Matter Halos with Nonlinear Field Theories
• Limits in late time conversion of cold dark matter into dark radiation
• Canadian Contributions to the Search for Neutrinoless Double Beta Decay
• Cosmological constraints on sterile neutrino Dark Matter production mechanisms
• Heavy neutrino searches from MeV to TeV
• Cosmology and Dark Matter
• Cosmic Neutrinos and Other Light Relics
• Dark Matter Decay and Cosmic Rays
• How many new particles do we need after the Higgs boson?
• Electron-positron Annihilation Lines and Decaying Sterile Neutrinos