Reproducing lepton mixing in a texture zero model

Explicit lepton texture

An explicit form of charged–lepton mass matrix, predicting mτ = 1776.80 MeV from the experimental values of me and mμ (in good agreement with the experimental figure mτ = 1777.05 −0.26 MeV), is applied to three neutrinos νe, νμ, ντ in order to correlate tentatively their masses and mixing parameters. While for charged leptons the off–diagonal mass–matrix elements turn out to be small versus its...

Zero Texture Model and SO(10) GUT

We study the bridge between the phenomenological mass matrix model and SO(10) GUT. Namely, we consider the four zero texture model in the framework of the renormalizable SO(10) GUT model. This unification gives more stringent constraints than the case where only either model is considered. However, we can obtain good fitting by expanding the minimal SO(10) GUT to include 120 in addition to 10 a...

Lepton Mixing and Seesaw Mechanism

Solar Neutrinos and Lepton Mixing

With latest experimental data the solar neutrino problem enters new phase when crucial aspects of the problem can be formulated in an essentially (solar) model independent way. Original neutrino fluxes can be considered as free parameters to be found from the solar neutrino experiments. Resonance flavour conversion gives the best fit of all experimental results. Already existing data allow one ...

Hierarchical Neutrino Masses and Large Mixing Angles from the Fritzsch Texture of Lepton Mass Matrices

We show that the Fritzsch texture of lepton mass matrices can naturally lead to the bi-large flavor mixing pattern, if three neutrinos have a normal but weak mass hierarchy (typically, m1 : m2 : m3 ∼ 1 : 3 : 10). The effective mass of the tritium beta decay and that of the neutrinoless double beta decay are too small to be observable in this ansatz, but CP violation at the percent level is allo...