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Survey of vector-like fermion extensions of the Standard Model and their phenomenological implications

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arxiv 1404.4398 v2 pith:HMBRDLGR submitted 2014-04-16 hep-ph

Sebastian A.R. Ellis , Rohini M. Godbole , Shrihari Gopalakrishna , James D. Wells This is my paper · ORCID
classification hep-ph
keywords vector-likeextensionsfermionsfermionflavorimplicationsinvestigatemodel
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With the renewed interest in vector-like fermion extensions of the Standard Model, we present here a study of multiple vector-like theories and their phenomenological implications. Our focus is mostly on minimal flavor conserving theories that couple the vector-like fermions to the SM gauge fields and mix only weakly with SM fermions so as to avoid flavor problems. We present calculations for precision electroweak and vector-like state decays, which are needed to investigate compatibility with currently known data. We investigate the impact of vector-like fermions on Higgs boson production and decay, including loop contributions, in a wide variety of vector-like extensions and their parameter spaces.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. The Two Scales of New Physics in Loop-Induced Higgs Couplings

    hep-ph 2024-12 conditional novelty 6.0 of 10

    A deviation in the loop-induced Higgs couplings hgg, hγγ, or hZγ caused solely by new vectorlike fermions implies an upper bound on the mass scale of new bosons needed to restore perturbativity and vacuum stability.

  2. Non-standard decays of vector-like top partners in a $2$-Higgs doublet model at the HL-LHC

    hep-ph 2026-06 unverdicted novelty 4.0 of 10

    Collider analysis shows the 2τ + 2b + MET channel can probe vector-like top partners up to 1.9 TeV in 2HDM scenarios at HL-LHC.

  3. Prospects for probing neutral vector-like leptons via pair production at muon collider

    hep-ph 2026-06 unverdicted novelty 3.0 of 10

    Simulations indicate a 6 TeV muon collider with 4 ab^{-1} can reach >5σ significance for neutral doublet VLLs of 1.3-3 TeV mass using 4j2μ and 2ℓ2μ + missing energy channels under polarized beams.

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