Minimal seesaw models and minimal lepton flavor violation
  We study the implications of the global $U(1)_R$ symmetry present in minimal lepton flavor violating implementations of the seesaw mechanism for neutrino masses. Our discussion is done in the context of explicit minimal type-I seesaw scenarios, where depending on the R-charge assignment different models can be constructed. We study the charged lepton flavor violating phenomenology of a concrete realization paying special attention to $\mu\to e\gamma$ and $\mu\to 3e$. 
Audrey Deg\'ee
hep-ph