Neutrino phenomenology and stable dark matter with A4

We present a model based on the A4 non-Abelian discrete symmetry leading to a predictive five-parameter neutrino mass matrix and providing a stable dark matter candidate. We found an interesting correlation among the atmospheric and the reactor angles which predicts θ23∼π/4 for very small reactor angle and deviation from maximal atmospheric mixing for large θ13. Only normal neutrino mass spectrum is possible and the effective mass entering the neutrinoless double beta decay rate is constrained to be |mee|>4×10−4 eV.