Neutrino Masses, Grand Unification, and Baryon Number Violation
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.
Keywords
Cite
@article{arxiv.1404.4057,
title = {Neutrino Masses, Grand Unification, and Baryon Number Violation},
author = {Andre de Gouvea and Juan Herrero-Garcia and Andrew Kobach},
journal= {arXiv preprint arXiv:1404.4057},
year = {2014}
}
Comments
12 pages, 1 figure. Improved discussion, references added, results unchanged