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arxiv: 1910.02961 · v1 · pith:VO7Q7O2Inew · submitted 2019-10-07 · ✦ hep-ph · astro-ph.CO· hep-ex· hep-th

Dirac neutrinos from Peccei-Quinn symmetry: a fresh look at the axion

classification ✦ hep-ph astro-ph.COhep-exhep-th
keywords diracaxionneutrinoneutrinosconventionalcurrentlyeffectiveemerge
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We show that a very simple solution to the strong CP problem naturally leads to Dirac neutrinos. Small effective neutrino masses emerge from a type I Dirac seesaw mechanism. Neutrino mass limits probe the axion parameters in regions currently inaccessible to conventional searches.

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