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arxiv 1910.02961 v1 pith:VO7Q7O2I submitted 2019-10-07 hep-ph astro-ph.COhep-exhep-th

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

classification hep-ph astro-ph.COhep-exhep-th
keywords diracaxionneutrinoneutrinosconventionalcurrentlyeffectiveemerge
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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  1. Dirac one-loop seesaw in a non-invertible fusion rule

    hep-ph 2026-04 unverdicted novelty 6.0

    A one-loop Dirac neutrino mass model stabilized by a non-invertible fusion rule from Z3 x Z3' accommodates oscillation data and provides a viable bosonic dark matter candidate.