Seesaw neutrino masses and mixing with extended democracy

Details Seesaw neutrino masses and mixing with extended democracy Seesaw neutrino masses and mixing with extended democracy

2000-12-05

arxiv.org/abs/hep-ph/0012055v1

Nucl.Phys.Proc.Suppl. 100 (2001) 290-292

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex, 3pages. Uses espcrc2.sty. Talk given at the Europhysics Neutrino Oscillation Workshop - NOW 2000. To appear in Nucl. Ph

Scientific paper

10.1016/S0920-5632(01)01459-1

In the context of a minimal extension of the Standard Model with three extra heavy right-handed neutrinos, we propose a model for neutrino masses and mixing based on the hipothesis of a complete alignment of the lepton mass matrices in flavour space. Considering a uniform quasi-democratic structure for these matrices, we show that, in the presence of a highly hierarchical right-handed neutrino mass spectrum, the effective neutrino mass matrix, obtained through the seesaw mechanism, can reproduce all the solutions of the solar neutrino problem.

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