Symmetry, dark matter and LHC phenomenology of the minimal $\nu$SM

Abstract

A sterile neutrino with a mass of a few keV can play the role of a warm dark matter(DM). This can be realized in seesaw models with 3 left- and 3 right-handed neutrinos. It is possible to identify the keV neutrino to be one of the right-handed neutrinos leaving the other two to be much more heavier, the $\nu$SM model. We show that with this realization of keV neutrino DM, the model has an approximate Friedberg-Lee symmetry providing a natural explanation for the lightness of the right-handed neutrino. We also find that in this model the mixing parameters couple light and heavy neutrinos are strongly correlated, and can be large enough to have testable effects at the LHC for the two heavy right-handed neutrinos to be in the hundred-GeV range.

20 pages, 5 figures, discussions expanded, references added, to appear in PRD

References in corpus (18)

• Phenomenology with Massive Neutrinos
• Right-Handed Neutrinos at LHC and the Mechanism of Neutrino Mass Generation
• Distinguishing seesaw models at LHC with multi-lepton signals
• Sterile neutrinos: the dark side of the light fermions
• Effects of new leptons in Electroweak Precision Data
• A possible symmetry of the $\nu$MSM
• A lower bound on the mass of Dark Matter particles
• Where to find a dark matter sterile neutrino?
• Realistic sterile neutrino dark matter with keV mass does not contradict cosmological bounds
• Relic keV sterile neutrinos and reionization
• Constraints on decaying Dark Matter from XMM-Newton observations of M31
• Constraints on the parameters of radiatively decaying dark matter from the dark matter halo of the Milky Way and Ursa Minor
• Neutrino Masses, Lepton Flavor Mixing and Leptogenesis in the Minimal Seesaw Model
• Large Mixing of Light and Heavy Neutrinos in Seesaw Models and the LHC
• Neutrino Sector with Majorana Mass Terms and Friedberg-Lee Symmetry
• Jarlskog Invariant of the Neutrino Mapping Matrix
• The Friedberg-Lee Symmetry and Minimal Seesaw Model
• Friedberg-Lee symmetry and tri-bimaximal neutrino mixing in the inverse seesaw mechanism

Cited by in corpus (8)

• Warm Dark Matter from keVins
• Neutrino Masses, Dark Matter and B-L Symmetry at the LHC
• keV scale ${\nu }_R$ dark matter and its detection in $\beta$ decay experiment
• Signature of heavy sterile neutrinos at CEPC
• Light dark matter from dark sector decay
• Constraining models for keV sterile neutrinos by quasi-degenerate active neutrinos
• Magnetic dipole moment and keV neutrino dark matter
• A Light Sterile Neutrino from Friedberg-Lee Symmetry