Isomeric Lepton Mass Matrices and Bi-large Neutrino Mixing
arXiv:hep-ph/0403261 · doi:10.1016/j.physletb.2004.04.059
Abstract
We show that there exist six parallel textures of the charged lepton and neutrino mass matrices with six vanishing entries, whose phenomenological consequences are exactly the same. These {\it isomeric} lepton mass matrices are compatible with current experimental data at the $3Ï$ level. If the seesaw mechanism and the Fukugita-Tanimoto-Yanagida hypothesis are taken into account, it will be possible to fit the experimental data at or below the $2Ï$ level. In particular, the maximal atmospheric neutrino mixing can be reconciled with a strong neutrino mass hierarchy in the seesaw case.
16 pages, 6 figures