REVIEW 28 cited by
Sterile Neutrinos as Dark Matter
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
Sterile Neutrinos as Dark Matter
read the original abstract
The simplest model that can accomodate a viable nonbaryonic dark matter candidate is the standard electroweak theory with the addition of right-handed or sterile neutrinos. We reexamine this model and find that the sterile neutrinos can be either hot, warm, or cold dark matter. Since their only direct coupling is to left-handed or active neutrinos, the most efficient production mechanism is via neutrino oscillations. If the production rate is always less than the expansion rate, then these neutrinos will never be in thermal equilibrium. However, enough of them may be produced so that they provide the missing mass necessary for closure. We consider a single generation of neutrino fields $\left (\nu_L,\,\nu_R\right )$ with a Dirac mass, $\mu$, and a Majorana mass for the right-handed components only, $M$. For $M\gg \mu$ we show that the number density of sterile neutrinos is proportional to $\mu^2/M$ so that the energy density today is {\it independent of} $M$. However $M$ is crucial in determining the large scale structure of the Universe. In particular, $M\simeq 0.1-1.0 {\rm ~keV}$ leads to warm dark matter and a structure formation scenario that may have some advantages over both the standard hot and cold dark matter scenarios.
Forward citations
Cited by 28 Pith papers
-
Probing Cosmic-Ray-Boosted and Supernova-Sourced Sub-GeV Dark Matter with Paleo-Detectors
Paleo-detectors can achieve high sensitivity to sub-GeV dark matter boosted by cosmic rays and supernovae, covering previously inaccessible parameter space with orders of magnitude better reach than current experiments.
-
Low-Scale Leptogenesis from Resonant Thermal Lepton Flavour Coherences
Resonant thermal lepton-flavour coherences at two loops enable dominant low-scale leptogenesis for both Dirac and Majorana singlet neutrinos down to GeV masses without mass degeneracy.
-
Dominant Thermal Resonant Mechanism for Low-Scale Leptogenesis
Thermal Resonant Leptogenesis produces the observed baryon asymmetry via a dominant thermal channel from Higgs decays and lepton-doublet coherences, without requiring quasi-degenerate sterile neutrinos.
-
Probing the fate of large primordial perturbations with exoplanets
Observed ultra-wide exoplanets already constrain the amplitude and scale of primordial power-spectrum peaks that produce ultra-compact minihalos, with misalignment signatures as a future probe.
-
Neutrino t-channels at Colliders: When Light Neutrinos Matter
The same-sign WW→ℓℓ t-channel signal for heavy Majorana neutrinos is cancelled by light-neutrino contributions in the seesaw model; the opposite-sign eµjj channel is a better probe.
-
High resolution Lyman-{\alpha} forest constraints on dark matter-neutrino scattering
The Lyman-alpha forest constrains dark matter-neutrino scattering to u_nu_chi < 1.5e-8 (95% C.L.), excluding previously claimed hints of a non-zero interaction.
-
Boson star-black hole binaries: initial data and head-on collisions
A one-body conformal-factor correction stabilizes boson star-black hole initial data, enabling gravitational-wave analysis that shows higher multipoles can discriminate mixed mergers from pure black-hole binaries.
-
The Plan B Model: $Z^{\prime}$ collider phenomenology and discovery prospects
Current LHC data exclude a significant portion of the Plan B Model's preferred parameter space, and the HL-LHC could extend sensitivity to Z′ masses around 2.5 TeV.
-
Minimal Majoron Dark Matter from a Discrete $Z_N$ Gauge Symmetry
Discrete Z_N-protected majoron dark matter excludes Z_5, leaves Z_7/Z_11/Z_13 viable, and predicts a 1–10 MeV Z_7 majoron testable by COSI through 511 keV and γγ lines.
-
Are Cosmological Data Excluding Sterile Neutrinos or Only the Fully Thermalized Limit?
Cosmological observations constrain the effective abundance of light sterile neutrinos tightly while allowing non-fully-thermalized realizations to remain viable across LambdaCDM and CPL models.
-
Long-lived sterile neutrinos from axionlike particles at the Super Tau-Charm Facility
A proposed Chinese charm factory could detect heavy neutral leptons from axionlike-particle decays with a displaced-vertex search, reaching electron-neutrino mixing one to two orders of magnitude below current bounds.
-
Hunting Sterile Neutrino Dark Matter in the MeV Gap
Future MeV telescopes are projected to improve existing limits on sterile neutrino dark matter decay rates by several orders of magnitude.
-
Sterile neutrino Dark Matter in the minimal Dirac Seesaw
A minimal Dirac seesaw model yields viable sterile-neutrino dark matter via freeze-in, with the right-handed mixing angle θ_R bypassing X-ray bounds.
-
A Variable-Slope Smooth-$k$ Filter for Modeling Halo Abundances with Damped and Oscillatory Power Spectra
Introduces a variable-slope smooth-k filter within Press-Schechter theory that uses separate slope parameters for small and intermediate mass regimes, claiming a single parameter set matches N-body halo mass functions...
-
Sterile Neutrino Dark Matter as a Probe of Inflationary Reheating
Inflaton decays during reheating can produce all of the observed sterile-neutrino dark matter with a branching ratio below 10^-4, evading X-ray bounds and making a future X-ray line a probe of the inflaton mass and re...
-
New Particles at the Z-Pole: Tera-Z factories as discovery and precision machines
Tera-Z factories can produce millions of heavy neutral leptons and billions of axion-like particles under optimistic assumptions, turning them into exotics factories for discovery and detailed study.
-
Gauge invariant perturbations of $F(T,T_G)$ Cosmology
Derives gauge-invariant perturbation equations for F(T, T_G) cosmology and provides physical interpretations for new contributions in each mode.
-
Constraining light fermionic dark matter with binary pulsars
Dynamical friction from a degenerate fermionic dark matter background induces measurable secular decay in binary pulsar orbital periods, with sensitivity to fermion masses ≳50 eV and example upper bounds around 1 keV ...
-
Planck 2018 results. VI. Cosmological parameters
Final Planck CMB data confirms the flat 6-parameter ΛCDM model with Ω_c h² = 0.120 ± 0.001, Ω_b h² = 0.0224 ± 0.0001, n_s = 0.965 ± 0.004, τ = 0.054 ± 0.007, H_0 = 67.4 ± 0.5 km/s/Mpc, and no strong evidence for extensions.
-
Non-adiabatic transitions in the density matrix formalism
Density matrix formalism supplies a general analytical solution for non-adiabatic transitions in two-state systems that interpolates between the LZSM regime and the extremely non-adiabatic limit.
-
Long-lived sterile neutrinos from axionlike particles at the Super Tau-Charm Facility
STCF can reach |V_eN|^2 values one to two orders of magnitude below current bounds for heavy neutral leptons via displaced-vertex searches from ALP decays in D-meson production.
-
Thermal effects on Dark Matter production during cosmic reheating
Thermal corrections to reheating and freeze-in DM production rates are generally small in the computable regime but can be large in constructed counter-examples.
-
Sterile Neutrino as an Asymmetric Dark Matter
A model for asymmetric freeze-in production of Dirac sterile neutrino dark matter is proposed, but the relic density calculation ignores the symmetric component and assumes an equilibrium mediator abundance.
-
Cosmological searches for the neutrino mass scale and mass ordering
Thesis summarizing an upper limit of 0.12 eV on the neutrino mass sum, bias calibration via CMB lensing cross-correlations, and tighter limits plus stronger normal-ordering preference in non-phantom dynamical dark ene...
-
Non-adiabatic transitions in the density matrix formalism
The paper derives a density-matrix perturbation formula for two-state non-adiabatic transitions that reproduces the Landau-Zener result only to first order.
-
Correlative study of flavor anomalies and dark matter in the light of scalar leptoquark
A U(1)_{Le-Lμ} extended SM with scalar leptoquark explains b→s anomalies via Z', leptoquark and new fermions while the lightest neutral fermion serves as DM, with constraints analyzed from B decays and DM observables.
-
Dark Matter Constraints from Small-Scale Cosmic Structure
A comprehensive review maps frontier small-scale structure probes onto warm, fuzzy, interacting, self-interacting, and decaying dark-matter limits and flags probe combination as the path forward.
-
In the Realm of the Hubble tension $-$ a Review of Solutions
A review summarizing the Hubble constant tension and proposed solutions from new physics that restore agreement between Planck CMB data and local H0 measurements within 1-2 sigma.
discussion (0)
Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.