In this talk, in the framework of supersymmetry with right-handed neutrinos we will be
able to reinterpret the Higgs superfields as a fourth family of leptons. From the theoretical
viewpoint, this seems to be more satisfactory than the situation in usual supersymmetric
models, where the Higgses are ‘disconnected’ from the rest of the matter and they have
not a three-fold replication. Inspired by this interpretation of the Higgs superfields, we also
propose the possible existence of a vector-like quark doublet representation in the low-energy
supersymmetric spectrum. These new quark superfields have the implication of a potentially
rich phenomenology at the LHC.
On a reinterpretation of the Higgs field in supersymmetry and a proposal for new quarks.
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