A composite Higgs model with minimal fine-tuning: the large-N and weak-technicolor limit
Lane, Kenneth D.
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Citation (published version)Kenneth Lane. 2014. "A composite Higgs model with minimal fine-tuning: The large-N and weak-technicolor limit." PHYSICAL REVIEW D, Volume 90, Issue 9, 12 pp. https://doi.org/10.1103/PhysRevD.90.095025
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).