1109.2320 (Ahmed Rashed et al.)

The charged lepton mass matrix and non-zero $θ_{13}$ with TeV scale
New Physics    [PDF]

Ahmed Rashed, Alakabha Datta

We provide an explicit structure of the charged lepton mass matrix which is
2-3 symmetric except for a single breaking of this symmetry by the muon mass.
We identify a flavor symmetric limit for the mass matrices where the first
generation is decoupled from the other two in the charged lepton sector while
in the neutrino sector the third generation is decoupled from the first two
generations. The leptonic mixing in the symmetric limit can be, among other
structures, the bi-maximal (BM) or the tri-bimaximal (TBM) mixing. Symmetry
breaking effects are included both in the charged lepton and the neutrino
sector to produce corrections to the leptonic mixing and explain the recent
$\theta_{13}$ measurements. A model that extends the SM by three right handed
neutrinos, an extra Higgs doublet, and two singlet scalars is introduced to
generate the leptonic mixing.

View original: http://arxiv.org/abs/1109.2320