Scale invariant extension of the standard model with strongly interacting hidden sector

Understand

We present a scale invariant extension of the standard model with new QCD-like strong interaction in the hidden sector.

• A scale $\Lambda_H$ is dynamically generated in the hidden sector by dimensional transmutation, and chiral symmetry breaking occurs in the hidden sector.
• This scale is transmitted to the SM sector by a real singlet scalar messenger S, and can trigger electroweak symmetry breaking (EWSB).
• Thus all the mass scales in this model arises from the hidden sector scale $\Lambda_H$ which has quantum mechanical origin.