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

2007/09/30 by Taeil Hur, Dong-Won Jung, P. Ko +1
Physics and Astronomy · #hep-ph

paper · pdf · doi:10.1016/j.physletb.2010.12.047

published as Phys.Lett.B696:262-265,2011 · The version which appeared in Phys. Lett. B

arxiv created 2011/01/01 · arxiv updated 2011/01/17

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 Λ_H would be generated by dimensional transmutation, and chiral symmetry breaking occurs in the hidden sector. This scale Λ_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.

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