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

TL;DR

This paper explores a hidden strongly interacting sector that can induce electroweak symmetry breaking and produce a stable dark matter candidate, analyzing collider signals and detection prospects.

Contribution

It introduces a model where a hidden confining gauge theory triggers EWSB and provides a stable dark matter candidate, with detailed phenomenological analysis.

Findings

Hidden sector scale can trigger EWSB in the Standard Model.

Lightest hidden mesons are stable and viable dark matter candidates.

Predicted collider signatures and detection rates for the dark matter.

Abstract

We consider a hidden sector with a vectorlike confining gauge theory like QCD with $N_{h,c}$ colors and $N_{h,f}$ light quarks ${\cal Q}_h$ in the hidden sector. Then a scale $\Lambda_H$ would be generated by dimensional transmutation, and chiral symmetry breaking occurs in the hidden sector. This scale $\Lambda_H$ can play a role of the SM Higgs mass parameter, triggering electroweak symmetry breaking (EWSB). Furthermore the lightest mesons in the hidden sector is stable by flavor conservation of the hidden sector strong interaction, and could be a good cold dark matter (CDM). We study collider phenomenology, and relic density and direct detection rates of the CDM of this model.