Two Composite Higgs Doublets: Is it the Low Energy Limit of a Natural Strong Electroweak Symmetry Breaking Sector ?

Abstract

In this paper, we construct an effective model that describes the electroweak symmetry breaking sector by means of composite Higgs-like scalars, following the ideas of Minimal Walking Technicolor (MWT). We argue that, because of the general failure of Extended Technicolor (ETC) to explain the mass of the top quark, it is necessary to introduce two composite Higgs bosons: one of them originated by a MWT-ETC sector and the other one produced by a Topcolor sector. We focus on the phenomenological differences between the light composite Higgs present in our model and the fundamental Higgs boson predicted by the Standard Model and their production at the LHC. We show that in this scheme the main production channel of the lighter Higgs boson are the associated production with a gauge boson and $WW$ fusion but not the gluon-gluon fusion channel which is substantially suppressed.

Version accepted in Modern Physics Letters A

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• Towards Working Technicolor: Effective Theories and Dark Matter
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• Technicolor and Beyond: Unification in Theory Space
• An i2HDM Strongly Coupled to a non-Abelian Vector Resonance
• Constraining Spin-One Color-Octet Resonances Using CDF and ATLAS Data
• Vector resonances at LHC Run II in composite 2HDM
• The limits on the strong Higgs sector parameters in the presence of new vector resonances