Separate seesaw and its applications to dark matter and baryogenesis
  We propose a new seesaw model in an extra-dimensional setup where only
right-handed neutrinos are bulk fields. In the model, localizations of an
extra-dimensional wave function and brane Majorana mass of the right-handed
neutrinos can be different among each generation of the right-handed neutrinos.
The setup can lead to different suppression factor dependences of effective
right-handed neutrino masses and neutrino Yukawa couplings for each generation.
It is shown that the resultant mass spectra of the right-handed neutrinos and
neutrino Yukawa couplings are favored in models of neutrino dark matter with
baryogenesis.
