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Phys. Rev. D 70, 031901 (2004) [5 pages]

A4 symmetry and neutrinos with very different masses

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Ernest Ma
Physics Department, University of California, Riverside, California 92521, USA
Phenomenology Institute, Physics Department, University of Wisconsin, Madison, Wisconsin 53706, USA

Rapid Communication Received 30 April 2004; published 18 August 2004

The A4 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 sin22θatm=1 and tan2θsol=0.5 for Ue3=0. It also predicts their deviations from 1 and 0.5 respectively for Ue3≠0.


©2004 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevD.70.031901
DOI: 10.1103/PhysRevD.70.031901
PACS: 11.30.Hv, 14.60.Pq

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