$U(1{)}_{Y^{\prime }}$ universal seesaw

Abstract

We extend the $SU(3{)}_c\times SU(2{)}_L\times U(1{)}_Y$ standard model by a $U(1{)}_{Y^{\prime }}$ gauge symmetry. Three right-handed neutrinos are introduced to cancel the gauge anomaly. One Higgs singlet is responsible for spontaneously breaking the $U(1{)}_{Y^{\prime }}$ symmetry while the standard model Higgs doublet does not carry any $U(1{)}_{Y^{\prime }}$ charges. The down-type quarks, up-type quarks, charged leptons and neutral neutrinos obtain their Dirac masses through four types of dimension-5 operators constructed by the fermion doublets and singlets with the Higgs doublet and singlet. This effective theory is realized in three renormalizable contexts with heavy fermion singlets, scalar doublets and fermion doublets. The heavy fermion singlets and doublets for generating the neutrino masses also accommodate a successful Dirac leptogenesis to explain the baryon asymmetry in the universe.

arXiv comment9 pages, 6 figures

References in corpus (12)

• The Physics of Heavy Z' Gauge Bosons
• A lower bound on the right-handed neutrino mass from leptogenesis
• Towards a complete theory of thermal leptogenesis in the SM and MSSM
• CP violating decays in leptogenesis scenarios
• CP Violation and Baryogenesis due to Heavy Majorana Neutrinos
• Baryogenesis from a Lepton Asymmetric Universe
• The Neutrino Mass Window for Baryogenesis
• Leptogenesis with Dirac Neutrinos
• Realistic Dirac Leptogenesis
• Radiative Neutrino Mass, Dark Matter and Leptogenesis
• NLO+NLL Collider Bounds, Dirac Fermion and Scalar Dark Matter in the B-L Model
• From Dirac neutrino masses to baryonic and dark matter asymmetries

Cited by in corpus (2)

• Radiative Origin of Fermion Mass Hierarchy in Left-Right Symmetric Theory
• The third family quark mass hierarchy and FCNC in the universal seesaw model