Dirac neutrinos from Peccei-Quinn symmetry: a fresh look at the axion
arXiv:1910.02961 · doi:10.1142/S021773232050176X
Abstract
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.
6 pages, 3 figures, 2 tables