A_4 Symmetry and Neutrinos with Very Different Masses

Details A_4 Symmetry and Neutrinos with Very Different Masses A_4 Symmetry and Neutrinos with Very Different Masses

2004-04-22

arxiv.org/abs/hep-ph/0404199v2

Phys.Rev. D70 (2004) 031901

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, no figure

Scientific paper

10.1103/PhysRevD.70.031901

The A_4 model of leptons was proposed originally for nearly degenerate neutrino masses. With minimal modification, it is shown to accommodate as well the cases of normal hierarchy and inverted hierarchy. In all cases, this new model predicts sin^2 2 theta_{atm} = 1 and tan^2 theta_{sol} = 0.5 for U_{e3} = 0. It also predicts their deviations from 1 and 0.5 respectively for U_{e3} not equal to zero.

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