Common Radiative Origin of Active and Sterile Neutrino Masses

Abstract

Sterile neutrinos with sub-electron volt (eV) masses have recently received serious attention due to the tantalizing hints from reactor neutrino experiments as well as cosmology. While the nine year old Wilkinson Mass Anisotropy Probe experiment suggests the effective number of relativistic degrees of freedom to be $N_{\text{eff}}=3.84\pm 0.40$, recently reported Planck collaboration results show more preference towards the standard three light neutrino scenario $N_{\text{eff}}=3.30_{-0.51}^{+0.54}$. Keeping in mind that the issue of existence or non-existence of sub-eV scale sterile neutrinos is not yet settled, here we outline a mechanism to generate sub-eV scale masses for three active and one sterile neutrinos simultaneously. The model is based on an abelian extension of standard model where the fermion and scalar fields are charged under the additional $U(1)$ gauge group in such an anomaly free way that it allows one eV scale neutrino and three massless neutrinos at tree level. However, at one loop level, this model naturally allows three active and one sterile neutrino with mass at the sub-eV scale. The model also allows for mixing between active and sterile neutrinos at one loop level which can have interesting signatures in reactor neutrino experiments.

v2: Discussion on active neutrino mixing included, more references added, to appear in Physics Letters B. arXiv admin note: substantial text overlap with arXiv:1202.2718

References in corpus (15)

• Observation of electron-antineutrino disappearance at Daya Bay
• Indication of Electron Neutrino Appearance from an Accelerator-produced Off-axis Muon Neutrino Beam
• The Reactor Antineutrino Anomaly
• Improved Search for ${\bar{\nu }}_{\mu }\to {\bar{\nu }}_e$ Oscillations in the MiniBooNE Experiment
• Sterile Neutrino Oscillations: The Global Picture
• Statistical Significance of the Gallium Anomaly
• A Combined ${\nu }_{\mu }\to {\nu }_e$ and ${\bar{\nu }}_{\mu }\to {\bar{\nu }}_e$ Oscillation Analysis of the MiniBooNE Excesses
• Light Sterile Neutrinos: Models and Phenomenology
• Limits on nu_e and anti-nu_e disappearance from Gallium and reactor experiments
• keV Neutrino Model Building
• Light and Superlight Sterile Neutrinos in the Minimal Radiative Inverse Seesaw Model
• The strongest bounds on active-sterile neutrino mixing after Planck data
• Additional Light Sterile Neutrinos and Cosmology
• Exotic Charges, Multicomponent Dark Matter and Light Sterile Neutrinos
• Are Light Sterile Neutrinos Preferred or Disfavored by Cosmology?

Cited by in corpus (11)

• A White Paper on keV Sterile Neutrino Dark Matter
• keV Sterile Neutrino Dark Matter from Singlet Scalar Decays: The Most General Case
• New U(1) Gauge Model of Radiative Lepton Masses with Sterile Neutrino and Dark Matter
• Galactic Center Gamma Ray Excess in a Radiative Neutrino Mass Model
• Common Origin of 3.55 keV X-Ray Line and Galactic Center Gamma Ray Excess in a Radiative Neutrino Mass Model
• Compatibility of $A_4$ Flavour Symmetric Minimal Extended Seesaw with $(3+1)$ Neutrino Data
• Non-zero ${\theta }_{13}$ with Unbroken $\mu -\tau$ Symmetry of the Active Neutrino Mass Matrix in the Presence of a Light Sterile Neutrino
• Analysis of four-zero textures in $3+1$ framework
• Texture zeros of low-energy Majorana neutrino mass matrix in 3+1 scheme
• $B-L$ model with $A_4\times Z_3\times Z_4$ symmetry for $3+1$ active$-$sterile neutrino mixing
• Freeze-In of radiative keV-scale neutrino dark matter from a new $\text{U}(1{)}_{\text{B-L}}$