Neutrino Masses from Planck-Scale Lepton Number Breaking

Alejandro Ibarra, Patrick Strobl, Takashi Toma

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


We consider an extension of the standard model by right-handed neutrinos and we argue that, under plausible assumptions, a neutrino mass of O(0.1) eV is naturally generated by the breaking of the lepton number at the Planck scale, possibly by gravitational effects, without the necessity of introducing new mass scales in the model. Some implications of this framework are also briefly discussed.

Original languageEnglish
Article number081803
JournalPhysical Review Letters
Issue number8
StatePublished - 27 Feb 2019


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