Stabilizing the invisible axion in 3-3-1 models
Alex G. Dias, V. Pleitez
Abstract
By introducing local ZN symmetries with N=11,13 in two 3-3-1 models, it is possible to implement an automatic Peccei-Quinn symmetry, keeping the axion protected against gravitational effects at the same time. Both models have a Z2 domain wall problem and the neutrinos are strictly Dirac particles.
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