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arXiv · 2002.04931

Natural Top-Bottom Mass Hierarchy in Composite Higgs Models

Martin Rosenlyst·Christopher T. Hill
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Abstract

We consider composite two-Higgs doublet models based on gauge-Yukawa theories with strongly interacting fermions generating the top-bottom mass hierarchy. The model features a single "universal" Higgs-Yukawa coupling, $ g $, which is identified with the top quark $ g\equiv g_t \sim \mathcal{O}(1) $. The top-bottom mass hierarchy arises by soft breaking of a $ \mathbb{Z}_2 $ symmetry by a condensate of strongly interacting fermions. A mass splitting between vector-like masses of the confined techni-fermions controls this top-bottom mass hierarchy. This mechanism can be present in a variety of models based on vacuum misalignment. For concreteness, we demonstrate it in a composite two-Higgs scheme.

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Martin Rosenlyst, Christopher T. Hill. 2020-02-12. Natural Top-Bottom Mass Hierarchy in Composite Higgs Models. https://doi.org/10.1103/physrevd.101.095027

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