Neutrino masses and mixings based on a special set of quark mass matrices

A special set of quark mass matrices favored by the hadronic flavor-changing data and yielding a top-quark mass near 135 GeV is used as input for the leptonic Dirac mass submatrices. A lower bound of ${{sin}^{2}2\theta }_{12}=0.0193\mathrm{}$ emerges, which implies a signal less than 25-40 solar-neutrino units in the nonadiabatic Mikheyev-Smirnov-Wolfenstein (MSW) region for the solar-neutrino gallium experiments. By varying the Dirac and heavy diagonal Majorana mass input, we obtain allowed regions in the $\delta m_{23}^2$ vs ${{sin}^{2}2\theta }_{23}$ planes for fixed points in the nonadiabatic MSW region.