Radiative magnification of neutrino mixings and a natural explanation of the neutrino anomalies

Details Radiative magnification of neutrino mixings and a natural explanation of the neutrino anomalies Radiative magnification of neutrino mixings and a natural explanation of the neutrino anomalies

2000-02-16

arxiv.org/abs/hep-ph/0002177v1

Phys.Lett. B481 (2000) 33-38

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages RevTex, 2 eps figures

Scientific paper

10.1016/S0370-2693(00)00410-X

We show that the neutrino mixing pattern with the large mixing required for the atmospheric neutrino problem and the small mixing angle MSW solution for the solar neutrino problem can be naturally generated through radiative magnification, even though all the mixing angles at the seesaw scale may be small. This can account for the neutrino anomalies as well as the CHOOZ constraints in the context of quark-lepton unified theories, where the quark and lepton mixing angles are expected to be similar in magnitude at the high scale. We also indicate the 4$\nu$ mixing scenarios for which this mechanism of radiative magnification can provide a natural explanation.

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