A Three Site Higgsless Model

Abstract

We analyze the spectrum and properties of a highly-deconstructed Higgsless model with only three sites. Such a model contains sufficient complexity to incorporate interesting physics issues related to fermion masses and electroweak observables, yet remains simple enough that it could be encoded in a Matrix Element Generator program for use with Monte Carlo simulations. The gauge sector of this model is equivalent to that of the BESS model; the new physics of interest here lies in the fermion sector. We analyze the form of the fermion Yukawa couplings required to produce the ideal fermion delocalization that causes tree-level precision electroweak corrections to vanish. We discuss the size of one-loop corrections to b \to s γ, the weak-isospin violating parameter αT and the decay Z \to b \bar{b}. We find that the new fermiophobic vector states (the analogs of the gauge-boson KK modes in a continuum model) can be reasonably light, with a mass as low as 380 GeV, while the extra (approximately vectorial) quark and lepton states (the analogs of the fermion KK modes) must be heavier than 1.8 TeV.

30 pages, JHEP.cls, axodraw. References and acknowledgements added, minor textual clarifications added and typos fixed, relationship to BESS model emphasized. Typos corrected, version to appear in PRD

References in corpus (3)

• Disguising the Oblique Parameters
• One-Loop Corrections to the S and T Parameters in a Three Site Higgsless Model
• Chiral Fermion Delocalization in Deconstructed Higgsless Theories

Cited by in corpus (26)

• FeynRules - Feynman rules made easy
• LHC Signatures of New Gauge Bosons in the Minimal Higgsless Model
• A New Custodian for a Realistic Higgsless Model
• Dark Matter and Electroweak Symmetry Breaking in Models with Warped Extra Dimensions
• Heavy Vectors in Higgs-less models
• One-Loop Corrections to the S and T Parameters in a Three Site Higgsless Model
• Drell-Yan production at the LHC in a four site Higgsless model
• Dynamical electro-weak symmetry breaking from deformed AdS: vector mesons and effective couplings
• The Three Site Model at One-Loop
• Little M-theory
• The Top Triangle Moose: Combining Higgsless and Topcolor Mechanisms for Mass Generation
• General Sum Rules for WW Scattering in Higgsless Models: Equivalence Theorem and Deconstruction Identities
• Chiral-logarithmic Corrections to the S and T Parameters in Higgsless Models
• Production of Almost Fermiophobic Gauge Bosons in the Minimal Higgsless Model at the LHC
• Does the three site Higgsless model survive the electroweak precision tests at loop?
• Little Higgs, Non-standard Higgs, No Higgs and All That
• Technicolor Signals at the LHC
• Z to b bbar and Chiral Currents in Higgsless Models
• Unitarity Bounds for New Physics from Axial Coupling at LHC
• Effective fermion couplings in warped 5D Higgsless theories
• Unitarity and Bounds on the Scale of Fermion Mass Generation
• Vortices and Superfields on a Graph
• Single production of heavy top quark from the three-site Higgsless model
• A Four-site Higgsless Model with Wavefunction Mixing
• Higgsinoless Supersymmetry and Hidden Gravity
• The new charged gauge boson $W^{\prime }$ and the subprocess $eq\to \nu q^{\prime }$ at $e^{+}{e}^{-}$ and $ep$ colliders