Neutrino masses and mixings in the MSSM with soft bilinear $R_p$ violation

Abstract

We analyse a simple RPV extension of the MSSM, with bilinear R-parity violation in the soft terms and vevs, but not between the terms in the superpotential. The model gives two massive neutrinos, and can fit all constraints from neutrino data. We show analytically how to compute the lepton number violating Lagrangian parameters from neutrino masses and mixing angles. Conversely, we numerically vary the bilinear couplings as input parameters to determine the allowed ranges that are consistent with neutrino data. We briefly comment on the implications of our bounds for low energy LFV processes.

17 pages, 10 PS figures, REVTeX

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• Global Analysis of Solar Neutrino Oscillations Including SNO CC Measurement
• Model-dependent and independent implications of the first Sudbury Neutrino Observatory results
• Spontaneous R-Parity violation bounds

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