Abstract
We show that seesaw models based on flavor symmetries (such as A4 and Z7⋊Z3) which produce exact tribimaximal neutrino mixing also imply a vanishing leptogenesis asymmetry. We show that higher order symmetry breaking corrections in these models can give a non-zero leptogenesis asymmetry and generically also give deviations from tribimaximal mixing and a non-zero θ13≳10−2.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have