Neutrino Properties from E_6 x SO(3) x Z(2)

Details Neutrino Properties from E_6 x SO(3) x Z(2) Neutrino Properties from E_6 x SO(3) x Z(2)

2010-03-02

arxiv.org/abs/1003.0581v1

Fortschr. Phys., 1-7 (2010)

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages

Scientific paper

10.1002/prop.21000034

The group E_6 for grand unification is combined with the generation symmetry group SO(3) x Z(2). The coupling matrices in the Yukawa interaction are identified with the vacuum expectation values of scalar flavons. The symmetric part of this 3x3 coupling matrix can be identified with the known up-quark hierarchy. The antisymmetric part is responsible for fermion mixings and CP violation. Numerical fits with only few parameters reproduce quantitatively all known fermion properties. The model predicts an inverted neutrino hierarchy, CP violation properties as well as the 0v2beta decay parameter. It also predicts that the masses of the two lightest of six `right handed' neutrinos lie in the low TeV region.

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