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arXiv · 1404.4057

Neutrino Masses, Grand Unification, and Baryon Number Violation

Andre de Gouvea·Juan Herrero-Garcia·Andrew Kobach
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Abstract

If grand unification is real, searches for baryon-number violation should be included on the list of observables that may reveal information regarding the origin of neutrino masses. Making use of an effective-operator approach and assuming that nature is SU(5) invariant at very short distances, we estimate the consequences of different scenarios that lead to light Majorana neutrinos for low-energy phenomena that violate baryon number minus lepton number (B-L) by two (or more) units, including neutron-antineutron oscillations and B-L violating nucleon decays. We find that, among all possible effective theories of lepton-number violation that lead to nonzero neutrino masses, only a subset is, broadly speaking, consistent with grand unification.

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Andre de Gouvea, Juan Herrero-Garcia, Andrew Kobach. 2014-08-08. Neutrino Masses, Grand Unification, and Baryon Number Violation. https://doi.org/10.1103/physrevd.90.016011

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