Peccei-Quinn symmetry as the origin of Dirac Neutrino Masses

Chian-Shu Chen; Lu-Hsing Tsai

Peccei-Quinn symmetry as the origin of Dirac Neutrino Masses

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arxiv 1210.6264 v2 pith:TJ4OW6QV submitted 2012-10-23 hep-ph

Chian-Shu Chen , Lu-Hsing Tsai This is my paper · ORCID

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keywords neutrinomodelchargeddirachiggsleptonicmassmasses

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abstract

We propose a model of Dirac neutrino masses generated at one-loop level. The origin of this mass is induced from Peccei-Quinn symmetry breaking which was proposed to solve the so-called strong CP problem in QCD, therefore, the neutrino mass is connected with the QCD scale, $\Lambda_{\rm QCD}$. We also study the parameter space of this model confronting with neutrino oscillation data and leptonic rare decays. The phenomenological implications to leptonic flavor physics such as the electromagnetic moment of charged leptons and neutrinos are studied. Axion as the dark matter candidate is one of the byproduct in our scenario. Di-photon and Z-photon decay channels in the LHC Higgs search are investigated, we show that the effects of singly charged singlet scalar can be distinguished from the general two Higgs doublet model.

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