Toward neutrino texture dominated by Majorana lefthanded mass matrix

Details Toward neutrino texture dominated by Majorana lefthanded mass matrix Toward neutrino texture dominated by Majorana lefthanded mass matrix

2001-03-21

arxiv.org/abs/hep-ph/0103226v1

Acta Phys.Polon. B32 (2001) 2129-2142

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, latex, no figures

Scientific paper

A form of mixing matrix for three active and three sterile, conventional Majorana neutrinos is proposed. Its Majorana lefthanded part arises from the popular bimaximal mixing matrix for three active neutrinos that works satisfactorily in solar and atmospheric experiments if the LSND effect is ignored. One of three sterile neutrinos, effective in the Majorana righthanded and Dirac parts of the proposed mixing matrix, is responsible perturbatively for the possible LSND effect by inducing one of three extra neutrino mass states to exist actively. The corresponding form of neutrino mass matrix is derived. If all three extra neutrino mass states get vanishing masses, the neutrino mass matrix is dominated by its specific Majorana lefthanded part. Then, the observed qualitative difference between mixings of neutrinos and down quarks may be connected with this Majorana lefthanded dominance realized for neutrinos.

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