Complex Scaling in Neutrino Mass Matrix

Using the residual symmetry approach, we propose a complex extension of the scaling ansatz on $M_ν$ which allows a nonzero mass for each of the three light neutrinos as well as a nonvanishing $θ_{13}$. Leptonic Dirac CP violation must be maximal while atmospheric neutrino mixing need not to be exactly maximal. Each of the two Majorana phases, to be probed by the search for $0νββ$ decay, has to be zero or $π$ and a normal neutrino mass hierarchy is allowed.

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