Dark matter stability and one-loop neutrino mass generation based on Peccei-Quinn symmetry

作者：Suematsu Daijiro^*

来源：European Physical Journal C, 2018, 78(1): 33.

DOI：10.1140/epjc/s10052-018-5519-4

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 Z(2) 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.

• 出版日期2018-1-16