Neutrino Mass, Flavour and CP Violation

In this talk I discuss the connection between neutrino mass, flavour and CP violation. I focus on three neutrino patterns of neutrino masses and mixing angles, and the corresponding Majorana mass matrices. I discuss the see-saw mechanism, and show how it may be applied in a very natural way to give a neutrino mass hierarchy with large atmospheric and solar angles by assuming sequential right-handed neutrino dominance. I then distinguish between heavy sequential dominance and light sequential dominance, and show how lepton flavour violation in the CMSSM provides a way to discriminate between these two possibilities. I also show that for a well motivated class of light sequential dominance models there is a link between leptogenesis and CP violation measurable in neutrino oscillation experiments.