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Self-Breaking of the Standard Model Gauge Symmetry

Nima Arkani-Hamed·Hsin-Chia Cheng·Bogdan A. Dobrescu·Lawrence J. Hall
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Abstract

If the gauge fields of the Standard Model propagate in TeV-size extra dimensions, they rapidly become strongly coupled and can form scalar bound states of quarks and leptons. If the quarks and leptons of the third generation propagate in 6 or 8 dimensions, we argue that the most tightly bound scalar is a composite of top quarks, having the quantum numbers of the Higgs doublet and a large coupling to the top quark. In the case where the gauge bosons propagate in a bulk of a certain volume, this composite Higgs doublet can successfully trigger electroweak symmetry breaking. The mass of the top quark is correctly predicted to within 20%, without the need to add a fundamental Yukawa interaction, and the Higgs boson mass is predicted to lie in the range 165 - 230 GeV. In addition to the Higgs boson, there may be a few other scalar composites sufficiently light to be observed at upcoming collider experiments.

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Nima Arkani-Hamed, Hsin-Chia Cheng, Bogdan A. Dobrescu, Lawrence J. Hall. 2000-11-03. Self-Breaking of the Standard Model Gauge Symmetry. https://doi.org/10.1103/physrevd.62.096006

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