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arXiv · 1108.1120

Neutrino masses beyond the tree level

D. Aristizabal Sierra
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Abstract

Models for Majorana neutrino masses can be classified according to the level in perturbation theory at which the effective dimension five operator $LLHH$ is realized. The possibilities range from the tree-level up to the three-loop level realizations. We discuss some general aspects of this approach and speculate about a model independent classification of the possible cases. Among all the realizations, those in which the effective operator is induced by radiative corrections open the possibility for lepton number violation near -or at- the electroweak scale. We discuss some phenomenological aspects of two generic radiative realizations: the Babu-Zee model and supersymmetric models with bilinear R-parity violation.

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D. Aristizabal Sierra. 2011-08-04. Neutrino masses beyond the tree level. https://doi.org/10.1007/s00601-011-0281-2

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