Completing constrained flavor violation: lepton masses, neutrinos and
  leptogenesis
  Constrained flavor violation is a recent proposal for predicting the
down-quark Yukawa matrix in terms of those for up quarks and charged leptons.
We study the viability of CFV with respect to its predictions for the lepton
mass ratios, showing that this remains a challenge, and suggest some possible
means for improving this shortcoming. We then extend CFV to include neutrinos,
and show that it leads to interesting predictions for hierachical heavy
neutrinos, and leptogenesis dominated by decays of the second heaviest one ("N2
leptogenesis"), as well as the possibility of low-scale leptoquark-mediated
exotic decays.
