New supersymmetric source of neutrino masses and mixings

Details New supersymmetric source of neutrino masses and mixings New supersymmetric source of neutrino masses and mixings

2002-06-26

arxiv.org/abs/hep-ph/0206276v1

Phys.Rev.Lett. 89 (2002) 161801

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, revtex

Scientific paper

10.1103/PhysRevLett.89.161801

Conventionally, neutrino masses in a supersymmetric theory arise from non-renormalizable lepton-number (L)-violating operators in the superpotential. The alternative possibility of having such operators in the Kahler potential as the dominant source of neutrino masses has very interesting implications and differences with respect to the standard scenario: first, the scale of L-violation can be lowered dramatically and neutrino masses have a different tan beta-dependence; second, the renormalization of these operators has remarkable properties: in many cases it improves drastically the stability of neutrino textures against radiative corrections, while in others it makes possible to generate radiatively large mixing angles in a natural way. In particular, the mass splitting and mixing angle of solar neutrinos (LAMSW solution) can be explained as a purely radiative effect.

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