MeV dark matter in the 3+1+1 model

Abstract

The existence of light sterile neutrinos in the eV mass range with relatively large mixing angles with the active neutrinos has been proposed for a variety of reasons, including to improve the fit to the LSND and MiniBooNE neutrino oscillation experiments, and reactor disappearance experiments. In ref. Phys. Rev. D 84, 053001 (2011), it was shown that neutrino mixing with a heavier sterile neutrino, in the mass range between 33 eV and several GeV, could significantly affect and improve the agreement between neutrino oscillation models with light sterile neutrinos and short baseline experimental results, allowing for a new source of CP violation in appearance experiments and for different apparent mixing angles in appearance and disappearance experiments. However in refs. Phys. Rev. D 86, 033015 (2012) and JHEP 1204, 083 (2012) it was shown that various collider experiment, supernovae, and cosmological constraints can eliminate most of the parameter region where such a heavy sterile neutrino can have a significant effect on neutrino oscillations. In this paper we consider the effects of allowing a new light scalar in the MeV mass region, which is a potential dark matter candidate, to interact with the sterile neutrinos, and show that the resulting model is a consistent theory of neutrino oscillation anomalies and dark matter which can also potentially explain the INTEGRAL excess of 511 keV gamma rays in the central region of the galaxy.

8 pages, 5 figures; v2: minor changes, version to appear in PRD

References in corpus (10)

• The Reactor Antineutrino Anomaly
• Exciting Dark Matter and the INTEGRAL/SPI 511 keV signal
• Sterile neutrino oscillations after first MiniBooNE results
• Cosmology seeking friendship with sterile neutrinos
• Constraints on Light Dark Matter From Core-Collapse Supernovae
• The galactic 511 keV line from electroweak scale WIMPs
• Gauge Trimming of Neutrino Masses
• Sterile Neutrinos and Global Symmetries
• Dark Radiation after Planck
• Fermion Mass Hierarchy and Proton Stability from Non-anomalous U(1)_F in SUSY SU(5)

Cited by in corpus (15)

• Pragmatic View of Short-Baseline Neutrino Oscillations
• Status of Light Sterile Neutrino Searches
• Light sterile neutrinos
• Constraints on Sterile Neutrinos in the MeV to GeV Mass Range
• Search for Heavy Neutrinos in $\pi \to \mu \nu$ Decay
• Light Sterile Neutrinos: Status and Perspectives
• MeV Dark Matter Complementarity and the Dark Photon Portal
• Three Twin Neutrinos: Evidence from LSND and MiniBooNE
• Appearance-Disappearance Relation in 3+$N_s$ Short-Baseline Neutrino Oscillations
• Sterile neutrinos, dark matter, and resonant effects in ultra high energy regimes
• $B-L$ model with $A_4\times Z_3\times Z_4$ symmetry for $3+1$ active$-$sterile neutrino mixing
• Secluded Dark Matter in light of the Cherenkov Telescope Array (CTA)
• Lepton masses and mixings, and muon anomalous magnetic moment in an extended $B-L$ model with type I seesaw mechanism
• Asymmetric dark matter and effective number of neutrinos
• Oscillations Beyond Three-Neutrino Mixing