Pathways to Naturally Small Dirac Neutrino Masses

Abstract

If neutrinos are truly Dirac fermions, the smallness of their masses may still be natural if certain symmetries exist beyond those of the standard model of quarks and leptons. We perform a systematic study of how this may occur at tree level and in one loop. We also propose a scotogenic version of the left-right gauge model with naturally small Dirac neutrino masses in one loop.

12 pages, 7 figures, version to appear in PLB

References in corpus (3)

• Radiative Neutrino Mass, Dark Matter and Leptogenesis
• Two-loop Dirac neutrino mass and WIMP dark matter
• Derivation of Dark Matter Parity from Lepton Parity

Cited by in corpus (18)

• From the trees to the forest: a review of radiative neutrino mass models
• Constraints on Sterile Neutrinos in the MeV to GeV Mass Range
• Generalized Bottom-Tau unification, neutrino oscillations and dark matter: predictions from a lepton quarticity flavor approach
• Radiative Left-Right Dirac Neutrino Mass
• Master Majorana neutrino mass parametrization
• Simplest Radiative Dirac Neutrino Mass Models
• Scotogenic $U(1{)}_{\chi }$ Dirac Neutrinos
• Observable Lepton Number Violation with Predominantly Dirac Nature of Active Neutrinos
• The $\mu -\tau$ reflection symmetry of Dirac neutrinos and its breaking effect via quantum corrections
• Observing Left-Right Symmetry in the Cosmic Microwave Background
• Ma-xion: Majoron as QCD axion in a radiative seesaw model
• Radiative type-I seesaw neutrino masses
• The role of residual symmetries in dark matter stability and the neutrino nature
• Self-interacting Dark Matter with Scalar Dilepton Mediator
• Scotogenic $A_5\to A_4$ Dirac Neutrinos with Freeze-In Dark Matter
• Theory and phenomenology of Dirac neutrinos
• Paths to proton stability in grand unification
• One-Loop Electron Mass and Three-Loop Dirac Neutrino Masses