Speaker
Marco Fabbrichesi
(INFN/SISSA)
Description
The idea of naturalness, in its original version, refers only to the finite renormalisation of the Higgs boson mass induced by the introduction of heavier states. It is still a powerful heuristic principle in model building beyond the SM. A compelling case is provided by the generation of neutrino masses. The right-handed sector responsible for the seesaw mechanism is made supersymmetric to comply with naturalness while the SM is left unchanged and non-supersymmetric. In the type-I seesaw, this implementation provides right-handed neutrino masses that are natural and consistent with baryogenesis.
Author
Marco Fabbrichesi
(INFN/SISSA)
