Neutrino Masses and Mixing in Supersymmetric Models without $R$ Parity

Details Neutrino Masses and Mixing in Supersymmetric Models without $R$ Parity Neutrino Masses and Mixing in Supersymmetric Models without $R$ Parity

1996-06-06

arxiv.org/abs/hep-ph/9606251v2

Phys.Lett. B384 (1996) 123-130

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, harvmac, no figures; Version to appear in Phys. Lett. B

Scientific paper

10.1016/0370-2693(96)00823-4

We study neutrino masses and mixing in Supersymmetric Models without $R$ parity and with generic soft Supersymmetry breaking terms. Neutrinos acquire mass from various sources: tree level neutrino--neutralino mixing, loop effects and non--renormalizable operators. Abelian horizontal symmetries (invoked to explain the smallness and hierarchy in quark parameters) replace $R$ parity in suppressing neutrino masses. We find lower bounds on the mixing angles: $\sin\theta_{ij} \gsim m(\ell_i^-)/m(\ell_j^-)$ ($i

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