Neutrino texture dominated by Majorana lefthanded mass matrix

2000/10/30 by Wojciech Krolikowski, Krolikowski, Wojciech
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/0010331

10 pages, latex, no figures, a misprint in the author's name and a numerical error in formulae for the mass matrix are corrected

arxiv created 2000/11/02 · arxiv updated 2009/11/30

Abstract

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 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. Also, the respective neutrino oscillation probabilities are calculated.

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• Possible LSND effect as a small perturbation of the bimaximal texture for three active neutrinos
• Option of light righthanded neutrinos avoiding oscillations
• Explicit seesaw with nearly bimaximal neutrino mixing and no LSND effect
• Majorana Neutrino Mass Matrices with a Texture Zero and a Cofactor Zero under Current Experimental Texts