Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-04-22
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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