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arXiv 1410.1817hep-phhep-th
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从强相互作用动力学产生弱物质和暗物质尺度

Dynamical generation of the weak and Dark Matter scales from strong interactions

Oleg Antipin, Michele Redi, Alessandro Strumia

摘要:

假设自然界中的质量标度只能通过维度的变化而产生,我们通过在新的强规范相互作用下加入类矢量费米子来扩展无量纲的标准模型。它们的非微扰动力学产生了一个质量尺度,通过电弱规范相互作用传递给基本的希格斯玻色子玻色子。在最小模型中,它具有与标准模型相同的参数,预言了电弱对称性的破缺,预言了多TeV区域的新物理,并且与所有现有的边界相容,由于偶然的对称性,它提供了两个稳定的暗物质候选者:SU(2)_L伴随的复合标量和复合单态费米子;它们的热遗迹丰度被预测为与测量的宇宙学DM丰度相当。这种类型的一些模型允许额外的汤川耦合; DM候选人仍然存在,即使显式质量添加。

英文摘要:

Assuming that mass scales arise in nature only via dimensional transmutation, we extend the dimension-less Standard Model by adding vector-like fermions charged under a new strong gauge interaction. Their non-perturbative dynamics generates a mass scale that is transmitted to the elementary Higgs boson by electro-weak gauge interactions. In its minimal version the model has the same number of parameters as the Standard Model, predicts that the electro-weak symmetry gets broken, predicts new-physics in the multi-TeV region and is compatible with all existing bounds, provides two Dark Matter candidates stable thanks to accidental symmetries: a composite scalar in the adjoint of SU(2)_L and a composite singlet fermion; their thermal relic abundance is predicted to be comparable to the measured cosmological DM abundance. Some models of this type allow for extra Yukawa couplings; DM candidates remain even if explicit masses are added.

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