Leptogenesis with Lepton-Number-Violating Dirac Neutrinos

Abstract

Dirac neutrinos with lepton-number-violating interactions can give rise to a new leptogenesis mechanism. In its simplest renormalizable realization, based on a gauged B-L symmetry spontaneously broken by four units, the decay of a new scalar creates an asymmetry in the right-handed neutrinos. A neutrinophilic two-Higgs-doublet model converts this asymmetry to the baryons, provides a natural explanation of the small neutrino masses, and can lead to an effective number of relativistic degrees of freedom of N(eff) = 3.29 due to the entropy-suppressed contribution of the right-handed neutrinos.

5 pages, 1 figure; matches published version

References in corpus (4)

• Leptogenesis in the Universe
• A New Two Higgs Doublet Model
• Neutrinoless Quadruple Beta Decay
• LHC phenomenology of a two-Higgs-doublet neutrino mass model

Cited by in corpus (24)

• Unbroken B-L Symmetry
• Pathways to Naturally Small Dirac Neutrino Masses
• Gauge $B-L$ Model with Residual $Z_3$ Symmetry
• Dirac Neutrinos and Dark Matter Stability from Lepton Quarticity
• Observing Dirac neutrinos in the cosmic microwave background
• Generation of radiative neutrino mass in the linear seesaw framework, charged lepton flavor violation and dark matter
• Naturally Small Dirac Neutrino Mass with Intermediate $SU(2{)}_L$ Multiplet Fields
• The $B-L$ Scotogenic Models for Dirac Neutrino Masses
• Dirac or Inverse Seesaw Neutrino Masses from Gauged B - L Symmetry
• Phenomenology of left-right symmetric dark matter
• CP Violation from Flavor Symmetry in a Lepton Quarticity Dark Matter Model
• $Z^{\prime }$ Portal Dark Matter in $B-L$ Scotogenic Dirac Model
• Scotogenic $U(1{)}_{\chi }$ Dirac Neutrinos
• Two-Loop $Z_4$ Dirac Neutrino Masses and Mixing, with Self-Interacting Dark Matter
• Search for neutrinoless quadruple-$\beta$ decay of ${}^{150}$Nd with the NEMO-3 detector
• Unraveling the Dirac Neutrino with Cosmological and Terrestrial Detectors
• Dark matter assisted Dirac leptogenesis and neutrino mass
• Low scale Dirac leptogenesis and dark matter with observable $\Delta N_{\mathrm{eff}}$
• Testing Dirac leptogenesis with the cosmic microwave background and proton decay
• S.M.A.S.H.E.D.: Standard Model Axion Seesaw Higgs Inflation Extended for Dirac Neutrinos
• Dirac leptogenesis from asymmetry wash-in via scatterings
• Search for triple and quadruple beta decay of ${}^{150}$Nd
• Search for neutrinoless quadruple beta decay of ${}^{136}$Xe in XMASS-I
• Probing High Scale Dirac Leptogenesis via Gravitational Waves from Domain Walls