Neutrino Oscillations and Neutrino Masses
In models with texture zeros in the fermion mass matrices the flavour mixing parameters are fixed by the ratios of the fermion masses. Using the experimental values for the neutrino mixing angles, I can calculate the neutrino masses. They are very small - the mass of the third neutrino is only 0.05 eV. The decay rate for the neutrinoless double beta decay is calculated.