Predictions forμ→eγin Supersymmetry from Nontrivial Quark-Lepton Complementarity and Flavor Symmetry

摘要

We compute the effect of nondiagonal neutrino mass inli→ljγin Supersymmetry (SUSY) theories with nontrivial quark-leptoncomplementarity and a flavor symmetry.The correlation matrixVM=UCKMUPMNSis such that its(1,3) entry, as preferred by the present experimental data, is zero.We do not assume thatVMis bimaximal. Quark-lepton complementarity and the flavor symmetry strongly constrainthe theory and we obtain a clear prediction for the contribution toμ→eγand theτdecaysτ→eγandτ→μγ. If the Dirac neutrino Yukawa couplings are degenerate but thelow-energy neutrino masses are not degenerate, then thelepton decays are related among them by theVMentries. On the other hand, if the Dirac neutrino Yukawa couplings arehierarchical or the low-energy neutrino masses are degenerate,then the prediction for the lepton decays comes from theUCKMhierarchy.