Unifying the flavor origin of dark matter with leptonic nonzero   $\theta_{13}$
  We propose a flavor symmetric approach to unify the origin of dark matter (DM) with the non-zero $\theta_{13}$ in the lepton sector. In this framework, breaking of a $U(1)$ flavor symmetry to a remnant $Z_2$ ensures the stability of the DM and gives rise to a modification to the existing $A_4$-based tri-bimaximal neutrino mixing to attain the required non-zero $\sin \theta_{13}$. This results in a range of Higgs portal coupling of the DM which can be potentially accessible at various ongoing and future direct and collider search experiments. 
Subhaditya Bhattacharya, Biswajit Karmakar, Narendra Sahu, Arunansu   Sil
hep-ph