Inverse Seesaw, dark matter and the Hubble tension

Abstract

We consider the inverse Seesaw scenario for neutrino masses with the approximate Lepton number symmetry broken dynamically by a scalar with Lepton number two. We show that the Majoron associated to the spontaneous symmetry breaking can alleviate the Hubble tension through its contribution to $\Delta N_{\text{eff}}$ and late decays to neutrinos. Among the additional fermionic states required for realizing the inverse Seesaw mechanism, sterile neutrinos at the keV-MeV scale can account for all the dark matter component of the Universe if produced via freeze-in from the decays of heavier degrees of freedom.

22 pages, 2 figures

References in corpus (22)

• In the Realm of the Hubble tension $-$ a Review of Solutions
• Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics Beyond LambdaCDM
• Right-Handed Neutrinos at LHC and the Mechanism of Neutrino Mass Generation
• Low energy effects of neutrino masses
• Dark-matter sterile neutrinos in models with a gauge singlet in the Higgs sector
• The nuMSM, leptonic asymmetries, and properties of singlet fermions
• Constraining DM properties with SPI
• A deep search for decaying dark matter with XMM-Newton blank-sky observations
• How warm are non-thermal relics? Lyman-$\alpha$ bounds on out-of-equilibrium dark matter
• Cold keV dark matter from decays and scatterings
• Baryon Asymmetry of the Universe in the NuMSM
• The Hubble Tension as a Hint of Leptogenesis and Neutrino Mass Generation
• Neutrino Masses from a Dark Neutrino Sector below the Electroweak Scale
• Minimal Dynamical Inverse See Saw
• Sterile neutrino dark matter via GeV-scale leptogenesis?
• Dark Matter and the elusive ${\mathbf{Z}}^{\prime }$ in a dynamical Inverse Seesaw scenario
• Equivalence between massless neutrinos and lepton number conservation in fermionic singlet extensions of the Standard Model
• Inverse Seesaw Model with a Modular $S_4^{}$ Symmetry: Lepton Flavor Mixing and Warm Dark Matter
• A testable hidden-sector model for Dark Matter and neutrino masses
• Production of heavy sterile neutrinos from vector boson decay at electroweak temperatures
• Dynamical inverse seesaw mechanism as a simple benchmark for electroweak breaking and Higgs boson studies
• Electroweak symmetry breaking in the inverse seesaw mechanism

Cited by in corpus (3)

• Gauged Inverse Seesaw from Dark Matter
• Cosmology of an Axion-Like Majoron
• Robustness of ARS Leptogenesis in Scalar Extensions