Electroweak interactions and dark baryons in the sextet BSM model with a composite Higgs particle

Abstract

The Electroweak interactions of a strongly coupled gauge theory are discussed with outlook beyond the Standard Model (BSM) under global and gauge anomaly constraints. The theory is built on a minimal massless fermion doublet of the SU(2) BSM flavor group (bsm-flavor) with a confining gauge force at the TeV scale in the two-index symmetric (sextet) representation of the BSM SU(3) color gauge group (bsm-color). The intriguing possibility of near-conformal sextet gauge dynamics could lead to the minimal realization of the composite Higgs mechanism with a light $0^{++}$ scalar, far separated from strongly coupled resonances of the confining gauge force in the 2-3 TeV range, distinct from Higgsless Technicolor. In previous publications we have presented results for the meson spectrum of the theory, including the light composite scalar, perhaps the emergent Higgs impostor. Here we discuss the critically important role of the baryon spectrum in the sextet model investigating its compatibility with what we know about thermal evolution of the early Universe including its galactic and terrestrial relics. For an important application, we report the first numerical results on the baryon spectrum of this theory from non-perturbative lattice simulations with baryon correlators in the staggered fermion implementation of the strongly coupled gauge sector. The quantum numbers of composite baryons and their spectroscopy from lattice simulations are required inputs for exploring dark matter contributions of the sextet BSM model, as outlined for future work.

23 pages, 3 figures

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Cited by in corpus (16)

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• Large scale separation and hadronic resonances from a new strongly interacting sector
• Looking behind the Standard Model with lattice gauge theory
• The spectrum and mass anomalous dimension of SU(2) adjoint QCD with two Dirac flavours
• Lattice Gauge Theory for Physics Beyond the Standard Model
• Estimating the central charge from the Rényi entanglement entropy
• The flavor dependence of $m_{\varrho }/f_{\pi }$
• Sextet Model with Wilson Fermions
• The SU(3) Sextet Model with Wilson Fermions
• Topological Structure of the Vacuum, Cosmological Constant and Dark Energy
• Diphoton excess and VV-scattering
• Dislocations under gradient flow and their effect on the renormalized coupling
• Beyond the Standard Model: Charting Fundamental Interactions via Lattice Simulations
• Weakly coupled conformal gauge theories on the lattice
• More on the flavor dependence of $m_{\varrho }/f_{\pi }$