Multiscale Technicolor and the Zbb-bar Vertex

Abstract

We estimate the correction to the Zbb-bar vertex arising from the exchanges of the sideways extended technicolor (ETC) boson and the flavor-diagonal ETC boson in the multiscale walking technicolor model. The obtained result is too large to explain the present data. However, if we introduce a new self- interaction for the top quark to induce the top quark condensate serving as the origin of the large top quark mass, the corrected R_b=Gamma_b/Gamma_h can be consistent with the recent LEP data. The corresponding correction to R_c=Gamma_c/Gamma_h is shown to be negligibly small.

9-page LaTex file

References in corpus (16)

• Observation of Top Quark Production in Pbar-P Collisions
• Topcolor Assisted Technicolor
• Natural Topcolor--Assisted Technicolor
• Walking Technicolor and Electroweak Radiative Corrections
• Revenge of the One-Family Technicolor Models
• Multiscale Technicolor and Top Production
• A Tumbling Top-Quark Condensate Model
• Spontaneously Broken Technicolor and the Dynamics of Virtual Vector Technimesons
• Z -> b\bar{b} Versus Dynamical Electroweak Symmetry Breaking involving the Top Quark
• Walking Technicolor And The $Zb\bar{b}$ Vertex
• Production of neutral pseudo-Goldstone bosons at LEP II and NLC in multiscale walking technicolor models
• Self-Breaking Technicolor
• Extended technicolor contribution to the Zbb vertex
• Nonoblique Corrections in Technicolor Theories Revisited
• Radiative Corrections to the Z-b-(anti-b) and Z-tau-(anti-tau) Vertices in a Realistic One-Family Extended Technicolor Model
• Fermion Mass Postdictions in a Generalized Extended Technicolour Scenario

Cited by in corpus (10)

• Reexamination of the Constraint on Topcolor-Assisted Technicolor Models from R_b
• Production and decay of the neutral top-pion in high energy $e^{+}{e}^{-}$ colliders
• The flavor-changing rare top decays $t\to cVV$ in topcolor-assisted technicolor theory
• The bound on the mass of the new gauge boson $Z^{\prime }$ from the process $\mu ⟶3e$
• Detecting the neutral top-pion at future muon colliders
• Rare decays $B_s\to l^{+}{l}^{-}$ and $B\to K{l}^{+}{l}^{-}$ in \the topcolor-assisted technicolor model
• Yukawa Corrections to gamma gamma --> b\bar{b} in the Topcolor Assisted Technicolor Models
• Lepton flavor violating signals of the neutral top-pion in future lepton colliders
• Associated production of a neutral top-Higgs with a heavy-quark pair in the γγcollisions at ILC
• Production of the neutral top-pion ${\pi }_t^0$ in association with a high-$p_T$ jet at the $LHC$