Hierarchical neutrino masses and mixing in non minimal-SU(5)

Details Hierarchical neutrino masses and mixing in non minimal-SU(5) Hierarchical neutrino masses and mixing in non minimal-SU(5)

2011-04-11

arxiv.org/abs/1104.1901v2

Phys.Rev.D84:013010,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 1 figure, 1 table. Captions inserted, 2 sentences for clarification added, 2 references added

Scientific paper

10.1103/PhysRevD.84.013010

We consider the problem of neutrino masses and mixing within the framework of a non-minimal supersymmetric SU(5) model extended by adding a set of 1,24 chiral superfields accommodating three right-handed neutrinos. A Type I+III see-saw mechanism can then be realized giving rise to a hierarchical mass spectrum for the light neutrinos of the form m_3> m_2>> m_1 consistent with present data. The extra colored states are pushed to the unification scale by proton stability constraints, while the intermediate see-saw energy scale and the unification scale are maintained in phenomenologically acceptable ranges. We also examine the issue of large neutrino mixing hierarchy \theta_{23}> \theta_{12}>> \theta_{13} in the above framework of hierarchical neutrino masses.

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