Non-zero θ 13 and δ CP in a neutrino mass model with A4 symmetry

In this paper, we consider a neutrino mass model based on A 4 symmetry. The spontaneous symmetry breaking in this model is chosen to obtain tribimaximal mixing in the neutrino sector. We introduce Z 2 × Z 2 invariant perturbations in this model which can give rise to acceptable values of θ 13 and δ CP. Perturbation in the charged lepton sector alone can lead to viable values of θ 13, but cannot generate δ CP. Perturbation in the neutrino sector alone can lead to acceptable θ 13 and maximal CP violation. By adjusting the magnitudes of perturbations in both sectors, it is possible to obtain any value of δ CP.