Dirac neutrinos from Peccei–Quinn symmetry: A fresh look at the axion
Eduardo Peinado, Mario Reig, Rahul Srivastava, J. W. F. Valle
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.
Topics & Concepts
PhysicsAxionNeutrinoDirac (video compression format)Particle physicsSeesaw molecular geometrySterile neutrinoSeesaw mechanismSymmetry (geometry)Dark matterNeutrino oscillationMathematicsGeometryDark Matter and Cosmic PhenomenaParticle physics theoretical and experimental studiesNeutrino Physics Research