| Abstract: |
We consider the low energy constraints that can be applied to see-saw type extensions of the Standard Model, which give a viable mechanism of neutrino mass generation and provide new particle content at the electroweak scale. We focus on predictions and constraints set on each scenario from both lepton number and lepton flavour violating processes. In this class of models, the flavour structure of the Yukawa couplings between the additional scalar and fermion representations and the charged leptons is highly constrained by neutrino oscillation data. In particular, we show that in some regions of the parameters space of type I and type II see-saw models, the Dirac and Majorana phases of the neutrino mixing matrix, the ordering and hierarchy of the active neutrino mass spectrum as well as the value of the reactor mixing angle $\theta_{13}$ may considerably affect the size of each observable. The correlation among different measurable phenomena in the lepton sector may provide compelling indirect evidence of low energy see-saw mechanism of neutrino mass generation. |
