Natural top-bottom mass hierarchy in composite Higgs models

Rosenlyst, Martin; Hill, Christopher T.

doi:10.1103/PhysRevD.101.095027

Natural top-bottom mass hierarchy in composite Higgs models

Journal Article · Wed May 20 00:00:00 EDT 2020 · Physical Review D

DOI:https://doi.org/10.1103/PhysRevD.101.095027· OSTI ID:1630246

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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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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: Danish National Research Foundation (DNRF); The Council For Independent Research; USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1630246

Alternate ID(s):: OSTI ID: 1606569

Report Number(s):: CP3-Origins--2020-02 DNRF90; FERMILAB-PUB--20-055-T; arXiv:2002.04931; 095027

Journal Information:: Physical Review D, Journal Name: Physical Review D Journal Issue: 9 Vol. 101; ISSN PRVDAQ; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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