Maximal CP Violation in Minimal Seesaw Model
  In the minimal seesaw model, we derive required constraints on Dirac neutrino masses inducing maximal CP violation in neutrino oscillations. If the maximal atmospheric neutrino mixing is further assumed, Dirac neutrino masses are uniquely determined to respect $\mu$-$\tau$ flavored CP symmetry for neutrinos. 
Teruyuki Kitabayashi and Masaki Yasu\`e
hep-ph