Warm Dark Matter in B-L Inverse Seesaw

Abstract

We show that a standard model gauge singlet fermion field, with mass of order keV or larger, and involved in the inverse seesaw mechanism of light neutrino mass generation, can be a good warm dark matter candidate. Our framework is based on B-L extension of the Standard Model. The construction ensures the absence of any mixing between active neutrinos and the aforementioned dark matter field. This circumvents the usual constraints on the mass of warm dark matter imposed by X-ray observations. We show that over-abundance of thermally produced warm dark matter (which nevertheless do not reach chemical equilibrium) can be reduced to an acceptable range in the presence of a moduli field decaying into radiation --- though only when the reheat temperature is low enough. Our warm dark matter candidate can also be produced directly from the decay of the moduli field during reheating. In this case, obtaining the right amount of relic abundance, while keeping the reheat temperature high enough as to be consistent with Big Bang nucleosynthesis bounds, places constraints on the branching ratio for the decay of the moduli field into dark matter.

16 pages, 6 figures, revised version to appear in Phys. Rev. D

References in corpus (20)

• Observation of electron-antineutrino disappearance at Daya Bay
• Indication of Electron Neutrino Appearance from an Accelerator-produced Off-axis Muon Neutrino Beam
• Warm Dark Matter as a solution to the small scale crisis: new constraints from high redshift Lyman-alpha forest data
• Measurement of Neutrino Oscillation by the K2K Experiment
• Dark matter and cosmic structure
• Neutralino with the Right Cold Dark Matter Abundance in (Almost) Any Supersymmetric Model
• Can sterile neutrinos be ruled out as warm dark matter candidates?
• Realistic sterile neutrino dark matter with keV mass does not contradict cosmological bounds
• Low scale B-L extension of the Standard Model at the LHC
• Direct X-ray Constraints on Sterile Neutrino Warm Dark Matter
• Dark Matter Production in Late Time Reheating
• Testability of Type I Seesaw at the CERN LHC: Revealing the Existence of the B-L Symmetry
• Radiative B-L symmetry breaking in supersymmetric models
• Signatures for right-handed neutrinos at the Large Hadron Collider
• The phase space density of fermionic dark matter haloes
• The origin of failed subhaloes and the common mass scale of the Milky Way satellite galaxies
• Sterile neutrino dark matter in $B-L$ extension of the standard model and galactic 511 keV line
• Gravitino Dark Matter from Inflaton Decay
• The Thermal Abundance of Semi-Relativistic Relics
• Higgs phenomenology in the minimal $B-L$ extension of the Standard Model at LHC

Cited by in corpus (18)

• Neutrinoless double beta decay versus other probes of heavy sterile neutrinos
• NLO+NLL Collider Bounds, Dirac Fermion and Scalar Dark Matter in the B-L Model
• From cusps to cores: a stochastic model
• The effect of fluctuating fuzzy axion haloes on stellar dynamics: a stochastic model
• Two-Neutrino Double Beta Decay with Sterile Neutrinos
• Multicomponent dark matter in extended $U(1{)}_{B-L}$: neutrino mass and high scale validity
• Conformal Standard Model with an extended scalar sector
• Lorentz Invariance Violation Effects on Gamma-Gamma Absorption and Compton Scattering
• keV Neutrino Dark Matter in a Fast Expanding Universe
• Ejection of supermassive black holes and implications for merger rates in fuzzy dark matter haloes
• Majorana Dark matter with B+L gauge symmetry
• The Dark $Z^{\prime }$ and Sterile Neutrinos Behind Current Anomalies
• $B-L$ model with $A_4\times Z_3\times Z_4$ symmetry for $3+1$ active$-$sterile neutrino mixing
• Inverse seesaw and dark matter in a gauged $\mathrm{B}-\mathrm{L}$ extension with flavour symmetry
• FIMP dark matter candidate(s) in a $B-L$ model with inverse seesaw mechanism
• Enhanced spectrum of primordial perturbations, galaxy formation and small scale structure
• Muon $g-2$ anomaly in a left-right model with an inverse seesaw mechanism
• Fermion masses and mixings in a $U(1{)}_X$ model based on the $\Sigma (18)$ discrete symmetry