Leptogenesis with testable Dirac neutrino mass generation

Abstract

A TeV-scale Higgs doublet can acquire a tiny vacuum expectation value via its small mixing with the standard model Higgs doublet. Ones then can realize a testable Dirac neutrino mass generation through the sizable Yukawa couplings among this new Higgs doublet, several right-handed neutrinos and the standard model lepton doublets. We show the small mixing between the two Higgs doublets can come from certain interactions for generating the cosmic baryon asymmetry.

arXiv comment6 pages, 2 figures

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• Low scale Dirac leptogenesis and dark matter with observable $\Delta N_{\mathrm{eff}}$
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• Diraxiogenesis
• S.M.A.S.H.E.D.: Standard Model Axion Seesaw Higgs Inflation Extended for Dirac Neutrinos
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• Probing High Scale Dirac Leptogenesis via Gravitational Waves from Domain Walls