Electroweak symmetry breaking and cold dark matter from strongly interacting hidden sector

TL;DR

This paper proposes a model where a hidden confining gauge sector generates a scale that triggers electroweak symmetry breaking and produces stable hidden hadrons as dark matter, linking the origin of mass and dark matter.

Contribution

It introduces a strongly interacting hidden sector that explains electroweak symmetry breaking and dark matter within a unified framework, with detailed phenomenological analysis.

Findings

Hidden sector scale can trigger EWSB in the Standard Model.

Stable hidden hadrons can account for cold dark matter.

Model predicts collider signatures and detection rates for dark matter.

Abstract

We consider a hidden sector with new vectorlike confining gauge theories like QCD. Then a scale $\Lambda_H$ would be generated in the hidden sector by dimensional transmutation, and chiral symmetry breaking occurs in the hidden sector. Then this scale $\Lambda_H$ can play a role of the SM Higgs mass parameter, triggering electroweak symmetry breaking (EWSB). Thus all the mass scales of the SM sector can arise from the hidden sector. Furthermore the lightest hadrons in the hidden sector is stable by the flavor conservation of the hidden sector strong interaction, and could be the cold dark matter (CDM). We study collider phenomenology, and relic density and direct detection rates of the CDM of this model.