School of Physics, KIAS, Seoul 130-722, Korea.
Phys Rev Lett. 2011 Apr 8;106(14):141802. doi: 10.1103/PhysRevLett.106.141802. Epub 2011 Apr 4.
We present a scale invariant extension of the standard model with a new QCD-like strong interaction in the hidden sector. A scale Λ(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. Thus all the mass scales in this model arise from the hidden sector scale Λ(H), which has quantum mechanical origin. Furthermore, the lightest hadrons in the hidden sector are stable by the flavor conservation of the hidden sector strong interaction, and could be the cold dark matter (CDM). We study collider phenomenology, relic density, and direct detection rates of the CDM of this model.
我们提出了一个具有新的 QCD 样强相互作用的标准模型的标度不变扩展，该强相互作用存在于隐藏领域。通过维度变换，在隐藏领域中动态产生标度Λ（H），并且在隐藏领域中发生手征对称性破缺。这个标度通过实单态标量信使 S 传递到 SM 领域，并可以引发电弱对称性破缺。因此，这个模型中的所有质量标度都来自于具有量子力学起源的隐藏领域标度Λ（H）。此外，通过隐藏领域强相互作用的味道守恒，隐藏领域中最轻的强子是稳定的，它们可能是冷暗物质（CDM）。我们研究了这个模型的 CDM 的对撞机现象学、 relic 密度和直接探测率。
