Real and complex random neutrino mass matrices and theta13

Details Real and complex random neutrino mass matrices and theta13 Real and complex random neutrino mass matrices and theta13

2011-11-30

arxiv.org/abs/1111.7278v3

Physics

High Energy Physics

High Energy Physics - Phenomenology

v3: Discussion about 3+1 scenario extended, fig 5,6 added

Scientific paper

Recently it has been shown that one of the basic parameters of the neutrino sector, so called theta13 angle is very small, but quite probably non-zero. We argue that the small value of theta13 can still be reproduced easily by a wide spectrum of randomly generated models of neutrino masses. For that we consider real and complex neutrino mass matrices, also including sterile neutrinos. A qualitative difference between results for real and complex mass matrices in the region of small theta13 values is observed. We show that statistically the present experimental data prefers random models of neutrino masses with sterile neutrinos.

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