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Seesaw neutrino masses and mixing with extended democracy

F. R. Joaquim
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Abstract

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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F. R. Joaquim. 2000-12-05. Seesaw neutrino masses and mixing with extended democracy. https://doi.org/10.1016/s0920-5632(01)01459-1

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