Regular Article - Theoretical Physics
Dark matter stability and one-loop neutrino mass generation based on Peccei–Quinn symmetry
Institute for Theoretical Physics, Kanazawa University, Kanazawa, 920-1192, Japan
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Accepted: 3 January 2018
Published online: 16 January 2018
We propose a model which is a simple extension of the KSVZ invisible axion model with an inert doublet scalar. Peccei–Quinn symmetry forbids tree-level neutrino mass generation and its remnant symmetry guarantees dark matter stability. The neutrino masses are generated by one-loop effects as a result of the breaking of Peccei–Quinn symmetry through a nonrenormalizable interaction. Although the low energy effective model coincides with an original scotogenic model which contains right-handed neutrinos with large masses, it is free from the strong CP problem.
© The Author(s), 2018