2014/07/31 by Kenneth Lane
Physics and Astronomy · #Boson #Dark Matter and Cosmic Phenomena #Electroweak interaction #Gauge boson #Higgs boson #Limit (mathematics) #Minimal model #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quark #Standard Model (mathematical formulation) #Symmetry breaking #Technicolor #Top quark #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevd.90.095025
published as Phys. Rev. D 90, 095025 (2014) · 21 pages. Version to be published in Physical Review D (modulo a few PRD style diktats); paragraph on S-parameter and its status in walking technicolor models added to Sec. 4 at referee's request; typos fixed in Appendix equations; reference added
arxiv created 2014/11/15 · openalex publication_date 2014/11/25 · arxiv updated 2014/12/03 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We suggest a criterion to minimize the amount of fine-tuning in a composite Higgs model. The paradigm of this type of model is the top-condensate model of Bardeen-Hill-Lindner. Although ``minimally fine-tuned,'' this model fails to account correctly for the masses of the top quark and the 125 GeV Higgs boson. We propose a generalization of the Bardeen-Hill-Lindner model that employs finely tuned extended technicolor plus technicolor (TC) interactions. The additional freedom of this model may accommodate both mt(173) and MH(125). This paper studies the large-NTC and -NC limit of this model in which technicolor is weak and does not contribute to electroweak symmetry breaking. Refinements including walking-TC dynamics and a renormalization-group analysis of mt and MH will appear in a subsequent paper. A likely generic signal of this model is enhanced production of longitudinally polarized weak bosons, alone and in association with H(125).