New Simple A4 Neutrino Model for Nonzero θ13 and Large δCP

In a new simple application of the non-Abelian discrete symmetry A(4) to charged-lepton and neutrino mass matrices, we show that for the current experimental central value of sin(2)2 theta(13) similar or equal to 0.1, leptonic CP violation is necessarily large, i.e. vertical bar tan delta(CP)vertical bar > 1.3. We also consider T-7 model with one parameter to be complex, thus allowing for one Dirac CP phase delta(CP) and two Majorana CP phases alpha(1,2). We find a slight modification to this correlation as a function of delta(CP). For a given set of input values of Delta m(21)(2), Delta m(32)(2), theta(12), and theta(13), we obtain sin(2) 2 theta(23) and m(ee) (the effective Majorana neutrino mass in neutrinoless double beta decay) as functions of tan delta(CP). We find that the structure of this model always yields small vertical bar tan delta(CP)vertical bar.