Neutrino Oscillations Induced by Two-loop Radiative Mechanism

Abstract

Two-loop radiative mechanism, when combined with an U(1)_{L'} symmetry generated by L_e-L_μ-L_τ(=L'), is shown to provide an estimate of Δm^2_{\odot}/Δm^2_{atm} $\sim$ εm_e/m_τ, where εmeasures the U(1)_{L'}-breaking. Since Δm^2_{atm} $\sim 3.5x10^{-3}e{V}^2,wefindthat\Delta m_{\odot }^2$\sim$\epsilon x10^{-6}e{V}^2,whichwillfallintotheallowedregionoftheLOWsolutiontothesolarneutrinoproblemfor\epsilon$\sim$ 0.1.

ReVTeX, 6 pages. Appendix added, one reference added and typographical errors corrected. Version to appear in Phys. Lett. B

References in corpus (3)

• Is Large Mixing Angle MSW the Solution of the Solar Neutrino Problems?
• Zee Neutrino Mass Model in SUSY Framework
• Seesaw model with softly broken L_e - L_μ- L_τ

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