Centro de Excelencia Severo Ochoa
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Facultad de Ciencias, Sala 201, Módulo M-15
Replacing the weakly coupled Higgs sector of the Standard Model by a strongly interac:ng new gauge sector has the poten:al to solve the fine tuning problem. We inves:gate a specific example, SU(3) gauge theory coupled to 2 flavors of massless Dirac fermions in the sextet representa:on and study its low energy proper:es on the laIce. In this model the Higgs is a composite par:cle, analogous to the sigma (or f0) in QCD. The unusual fermion content (sextet representa:on) leads to a surprisingly light composite Higgs as well as a slowly evolving gauge coupling. Our results (and other general considera:ons) make the model a promising candidate for beyond the Standard Model physics and we also discuss detailed predic:ons for the LHC.
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