Weak-Singlet Fermions: Models and Constraints

Abstract

We employ data from precision electroweak tests and collider searches to derive constraints on the possibility that weak-singlet fermions mix with the ordinary Standard Model fermions. Our findings are presented within the context of a theory with weak-singlet partners for all ordinary fermions and theories in which only third-generation fermions mix with weak singlets. In addition, we indicate how certain results can be applied more widely in theories containing exotic fermions.

29 pages, 12 figures; added 1 reference, expanded introduction

References in corpus (5)

• The Phenomenology of a Top Quark Seesaw Model
• Triviality and the Precision Bound on the Higgs Mass
• Search for the Standard Model Higgs boson in e${}^{+}$e${}^{-}$ interactions at $\root{s}$ = 189 GeV
• Fourth Generation b-prime decays into b + Higgs
• Precision Tests of Electroweak Physics

Cited by in corpus (30)

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• Effects of mixing with quark singlets
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• Z' Mediated Flavor Changing Neutral Currents in B Meson Decays
• A Higgs Conundrum with Vector Fermions
• Review of Top Quark Physics
• Unravelling an extended quark sector through multiple Higgs production?
• The Intermediate Higgs
• A Composite Little Higgs Model
• B_s-anti-B_s Mixing in Z' Models with Flavor-Changing Neutral Currents
• Constraints on the nonuniversal Z^\prime couplings from B\toπK, πK^{\ast} and ρK Decays
• Usefulness of effective field theory for boosted Higgs production
• Probe a family non-universal Z' boson effects in B(s)-> phi mu(+) mu(-)decay
• A Comprehensive Analysis of Hadronic b->s Transitions in a Family Non-universal Z' Model
• The Oblique Corrections from Heavy Scalars in Irreducible Representations
• The Effects of a Family Non-universal Z' Boson in the \bar{B}_s->πK, πK*, ρK Decays and B_d-\bar{B_d} mixing
• Implications of Family Nonuniversal $Z^{\prime }$ Model on B -->K_0^* pi Decays
• Study of the rare decays $B_{s,d}^{\ast }\to {\mu }^{+}{\mu }^{-}$
• Quark mixings and flavor changing interactions with singlet quarks
• Non-unitarity of CKM matrix from the vector singlet quark mixing and neutron electric dipole moment
• Yukawa Corrections to Higgs Production in Top Partner Models
• The effects of a family non-universal Z-prime boson on B--->pipi decays
• Flavor-changing interactions with singlet quarks and their implications for the LHC
• Perturbative extension of the standard model with a 125 GeV Higgs and Magnetic Dark Matter
• A Topcolor Jungle Gym
• Third Generation Seesaw Mixing with new Vector-Like Weak-Doublet Quarks
• New physics contributions to ${\bar{B}}_s\to {\pi }^0({\rho }^0){\eta }^{{(}^{\prime })}$ decays
• Unscrambling New Models for Higher-Energy Physics