Axino as a sterile neutrino and R parity violation

Abstract

We point out that axino can be a natural candidate for sterile neutrino which would accommodate the LSND data with atmospheric and solar neutrino oscillations. It is shown that the so called 3+1 scheme can be easily realized when supersymmetry breaking is mediated by gauge interactions and also R-parity is properly broken. Among the currently possible solutions to the solar neutrino problem, only the large angle MSW oscillation is allowed in this scheme. The weak scale value of the Higgs $\mu$ parameter and the required size of R-parity violation can be understood by means of spontaneously broken Peccei-Quinn symmetry.

7pp, one eps figure

References in corpus (7)

• Global three-neutrino oscillation analysis of neutrino data
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• Fate of the Sterile Neutrino
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Cited by in corpus (12)

• Phenomenological constraints on broken R parity symmetry in supersymmetry models
• Baryon Triality and Neutrino Masses from an Anomalous Flavor U(1)
• Probing bilinear R-parity violating supergravity at the LHC
• Light Axinos from Freeze-in: production processes, phase space distributions, and Ly-$\alpha$ forest constraints
• Simple Model for (3+2) Neutrino Oscillations
• Stau as the Lightest Supersymmetric Particle in R-Parity Violating SUSY Models: Discovery Potential with Early LHC Data
• Bi-large neutrino mixing from bilinear R-parity violation with non-universality
• Chiral Gauge Models for Light Sterile Neutrinos
• Colder Freeze-in Axinos Decaying into Photons
• Discovery Potential of Selectron or Smuon as the Lightest Supersymmetric Particle at the LHC
• Displaced Vertex signatures of a pseudo-Goldstone sterile neutrino
• Soft supersymmetry breaking as the sole origin of neutrino masses and lepton number violation