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arXiv 2209.01980hep-ph
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具有标量七重态的隐藏SU(2)_D矢量暗物质

Hidden SU(2)_D vector dark matter with a scalar septuplet

Zhao Zhang, Chengfeng Cai, Hong-Hao Zhang

摘要:

本文提出了一个TeV尺度下基于SU(2)_D规范对称性的矢量暗物质模型。引入标量七重态自发破缺SU(2)D对称性。七联体也扮演着标准模型和暗区之间的入口的角色。我们发现四次耦合$λ_3$的符号对应着两种不同的真空位形,从而产生了不同的规范玻色子的质量谱。对于$λ_3<0$,规范玻色子的质量是分裂的,而对于$λ_3\geq0$,质量是简并的。我们还研究了耦合的RG演化,发现微扰性和真空稳定性可以在参数空间上设置严格的界限。在唯象方面,我们考虑了包括暗物质直接探测、间接探测、遗迹密度和希格斯耦合测量在内的实验约束。我们发现,有参数空间生存从所有的约束,他们可以在未来的暗物质的直接和间接探测实验进行测试。

英文摘要:

We propose a vector dark matter model from a hidden SU(2)_D gauge symmetry at TeV scale. A scalar septuplet is introduced to break the SU(2)_D symmetry spontaneously. The septuplet also play the role of a portal between the standard model and the dark sector. We find that there are two different vacuum configurations corresponding to the sign of the quartic coupling $λ_3$, which yields different mass spectrum for the gauge bosons. For a $λ_3<0$, the masses of gauge bosons are splitting, while for a $λ_3\geq0$, the masses are degenerate. We also study the RG evolutions of the couplings, and find that the perturbativity and vacuum stability can set a stringent bound on the parameter space. For the phenomenological aspect, we consider the experimental constraints including dark matter direct detection, indirect detection, relic density, and Higgs couplings measurements. We find that there are parameter space survive from all the constraints, and they can be tested in future dark matter direct and indirect detection experiments.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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