In the Majorana and Dirac scotogenic models, the 3-body tau decay τ→3μ can reach branching ratios of about 10^-10 and 10^-11 respectively, after muon constraints and perturbativity are imposed.
Model for Small neutrino masses at the TeV Scale
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We propose a model for neutrino mass generation in wich no physics beyond a TeV is required. We extend the standard model by adding two charged singlet fields with lepton number two. Dirac neutrino masses $m_{\nu_D} \leq MeV$ are generated at the one loop level. Small left handed majorana neutrino masses can be generated via the seesaw mechanism with right handed neutrino masses $M_R$ are of order TeV scale.
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Lepton flavor violation in the Majorana and Dirac scotogenic models
In the Majorana and Dirac scotogenic models, the 3-body tau decay τ→3μ can reach branching ratios of about 10^-10 and 10^-11 respectively, after muon constraints and perturbativity are imposed.