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  • Double type II seesaw mecha...
    Gu, Pei-Hong

    Physical review. D, 01/2020, Volume: 101, Issue: 1
    Journal Article

    In the type II seesaw mechanism, the neutrino mass generation could be tested experimentally if the Higgs triplet is at the TeV scale and has a small cubic coupling to the standard model Higgs doublet. We show such small triplet-doublet coupling and the cosmic baryon asymmetry can be simultaneously induced by an additional seesaw mechanism involving a U ( 1 ) B − L gauge symmetry. Meanwhile, three right-handed neutrinos for canceling the gauge anomalies can form a stable Dirac fermionic dark matter besides an acceptably massless fermion.