Can New Colored Particles Illuminate the Higgs?

Abstract

We analyze the behavior of Higgs to diphoton rate and Higgs gluon-gluon production cross section in minimal extensions of the Standard Model comprising new colored vector-like fermions that do not mix with the ordinary ones. We compare these information with constraints coming from electroweak precision measurements. We compute pair production cross sections for the lightest fermion and discuss the LHC bounds. Finally, we study the phenomenology of possible quarkonium states composed by these new colored fermions.

18 pages, 7 figures. v2: typos fixed, references added, small improvements made

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• New Scalar Contributions to $h\to Z\gamma$
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• An effective gauge-Higgs operators analysis of new physics associated with the Higgs
• Fermionic extensions of the Standard Model in light of the Higgs couplings
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• Exotic Leptons: Higgs, Flavor and Collider Phenomenology
• Low Scale Supersymmetry Breaking and its LHC Signatures
• Custodial Leptons and Higgs Decays
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• Explaining ATLAS and CMS Results Within the Reduced Minimal 3-3-1 model
• A lattice QCD study of generalized gluelumps
• Liberating Higgs couplings in supersymmetry
• Higgs diphoton rate enhancement from supersymmetric physics beyond the MSSM
• What the top asymmetries tell us about single top production and Higgs decays
• The Smallest SU($N$) Hadrons