Dynamical approach to linking low energy phases with leptogenesis

Does a future observation of low energy leptonic CP violation imply a lepton asymmetry both in flavored leptogenesis and in its one-flavor approximation? Under reasonable assumptions this is the case if lepton masses and mixings are explained by a flavor symmetry in a seesaw model. We are particularly interested in the class of flavor theory which leads to U-e3 = 0 at leading order. We explicitly implement this approach with a predictive seesaw model for tribimaximal mixing (TBM) and show how cosmological baryon asymmetry can be directly triggered by low energy phases appearing in U-e3. In this model, thanks to this direct correlation, we can derive a lower bound on the reactor angle theta(13): sin(2)theta(13) greater than or similar to 0: 005.