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Abstract: Imagine to discover a new fourth family of leptons at the Large HadronCollider LHC but no signs of an associated fourth family of quarks. Whatwould that imply? An intriguing possibility is that the new fermions needed tocompensate for the new leptons gauge anomalies simultaneously address the bighierarchy problem of the Standard Model. A natural way to accomplish such ascenario is to have the Higgs itself be composite of these new fermions. Thisis the setup we are going to investigate in this paper using as a templateMinimal Walking Technicolor. We analyze a general heavy neutrino mass structurewith and without mixing with the Standard Model families. We also analyze theLHC potential to observe the fourth lepton family in tandem with the newcomposite Higgs dynamics. We finally introduce a model uniting the fourthlepton family and the technifermion sector at higher energies.



Autor: Mads T. Frandsen, Isabella Masina, Francesco Sannino

Fuente: https://arxiv.org/



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