Composite model with neutrino large mixing

Details Composite model with neutrino large mixing Composite model with neutrino large mixing

1998-07-30

arxiv.org/abs/hep-ph/9807552v1

Phys.Rev.D59:035011,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, Latex, no figures

Scientific paper

10.1103/PhysRevD.59.035011

We suggest a simple composite model that induces the large flavor mixing of neutrino in the supersymmetric theory. This model has only one hyper-color in addition to the standard gauge group, which makes composite states of preons. In this model, {\bf 10} and {\bf 1} representations in SU(5) grand unified theory are composite states and produce the mass hierarchy. This explains why the large mixing is realized in the lepton sector, while the small mixing is realized in the quark sector. This model can naturally solve the atmospheric neutrino problem. We can also solve the solar neutrino problem by improving the model.

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