Inverse tri-bimaximal type-III seesaw and lepton flavor violation

Abstract

We present a type-III version of inverse seesaw or, equivalently an inverse version of type-III seesaw. Naturally small neutrino masses arise at low-scale from the exchange of neutral fermions transforming as hyperchargeless SU(2) triplets. In order to implement tri-bimaximal lepton mixing we supplement the minimal SU(3)xSU(2)xU(1) gauge symmetry with an A4-based flavor symmetry. Our scenario induces lepton flavour violating (LFV) three body decays that can proceed at the tree level, while radiative li to lj gamma decays and mu-e conversion in nuclei are also expected to be sizeable. LFV decays are related by the underlying flavor symmetry and the new fermions are also expected to be accessible for study at the Large Hadron Collider (LHC).

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Cited by in corpus (11)

• The low-scale approach to neutrino masses
• Higgs $\to \mu \tau$ in Abelian and Non-Abelian Flavor Symmetry Models
• $(\mathbf{g}-2{)}_{\mathbf{e},\mathbf{\mu }}$ in an extended inverse type-III seesaw
• Lepton flavor at the electroweak scale: A complete A4 model
• Testing triplet fermions at the electron-positron and electron-proton colliders using fat jet signatures
• Triplet Scalar Dark Matter and Leptogenesis in an Inverse See-Saw Model of Neutrino Mass Generation
• Trinification, the Hierarchy Problem and Inverse Seesaw Neutrino Masses
• Type-III Seesaw: Phenomenological Implications of the Information Lost in Decoupling from High-Energy to Low-Energy
• Displaced Higgs production in Type-III Seesaw at the LHC/FCC, MATHUSLA and Muon collider
• Flavour and CP symmetries in the inverse seesaw
• The Two Scales of New Physics in Higgs Couplings