Theory HEP Seminar

F-theory and Neutrinos: Kaluza-Klein Dilution of Flavor Hierarchy

Jihye Seo

Harvard

We present a Majorana neutrino scenario in a F-theory SU(5) GUT model. The mass scale of the neutrinos arises from integrating out heavy Kaluza-Klein modes on the right-handed neutrinos. The participation of non-holomorphic Kaluza-Klein mode wave functions dilutes the mass hierarchy in comparison to the quark and charged lepton sectors, in agreement with experimentally measured mass splittings. The neutrinos are predicted to exhibit a normal mass hierarchy. The neutrino mixing matrix exhibits a mild hierarchical structure with large θ₁₃. We also predict mass measurements in single and double beta decay experiments.