F-theory and neutrinos: Kaluza-Klein dilution of flavor hierarchy

@article{Bouchard2010FtheoryAN,
  title={F-theory and neutrinos: Kaluza-Klein dilution of flavor hierarchy},
  author={Vincent Bouchard and Jonathan J. Heckman and Jihye Seo and Cumrun Vafa},
  journal={Journal of High Energy Physics},
  year={2010},
  volume={2010},
  pages={1-70}
}
We study minimal implementations of Majorana and Dirac neutrino scenarios in F-theory GUT models. In both cases the mass scale of the neutrinos mυ ∼ Mweak2/ΛUV arises from integrating out Kaluza-Klein modes, where ΛUV is close to the GUT scale. 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… 
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