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arXiv · 1206.5741

Combining type I and type II seesaw mechanisms in the minimal 3-3-1 model

W. Caetano·D. Cogollo·C. A. de S. Pires·P. S. Rodrigues da Silva
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Abstract

The minimal 3-3-1 model is perturbative until energies around 4-5TeV, posing a challenge to generate neutrino masses at eV scale, mainly if one aims to take advantage of the seesaw mechanism. As a means to circumvent this problem we propose a modification of the model such that it accommodates the type I and type II seesaw mechanisms altogether. We show that the conjunction of both mechanisms yield a neutrino mass expression suppressed by a high power of the cutoff scale, $M^5$, in its denominator. With such a suppression term we naturally obtain neutrino masses at eV scale when $M$ is around few TeV. We also investigate the size of lepton flavor violation through the process $μ\rightarrow eγ$.

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W. Caetano, D. Cogollo, C. A. de S. Pires, P. S. Rodrigues da Silva. 2012-06-25. Combining type I and type II seesaw mechanisms in the minimal 3-3-1 model. https://doi.org/10.1103/physrevd.86.055021

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