Neutrino windows to new physics

Laburpena

We have evidence that the Standard Model is not complete and that a more fundamental underlying theory remains to be unveiled. Models which explain several beyond the Standard Model indications instead of focusing on just one are particular appealing in this context. In this thesis we study possible connections between the open questions of the Standard Model: the quest for neutrino masses and mixings, the hierarchy problem, and the evidence for Dark Matter.