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arXiv 1810.06375hep-ph
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$SU(2)_L$基本表象中矢量场的暗物质

Dark Matter from a Vector Field in the Fundamental Representation of $SU(2)_L$

Bastian Díaz Sáez, Felipe Rojas-Abatte, Alfonso R. Zerwekh

摘要:

我们探讨了一个扩展的标准模型,其中包括一个矢量场的基本表示的$SU(2)_L$作为唯一的非标准度的自由。这种场可能出现在不同的场景中,如复合性,规范-希格斯统一和额外的维度场景。我们研究的模型中,$Z_2$对称性是明显的,使中性CP-甚至新的矢量场矢量暗物质候选人的组成部分。我们通过LEP和大型强子对撞机的数据,以及从目前的暗物质搜索约束的参数空间。此外,微扰么正性的影响的评论。我们发现,该模型是高度约束,但一个小区域的参数空间可以提供一个可行的DM候选人。另一方面,幺正性要求在低于10 TeV的尺度下完成UV。最后,我们对比我们的预测单喷流,- $Z$,-希格斯生产与惰性的两个希格斯双重模型中得到的。

英文摘要:

We explore an extension to the Standard Model which incorporates a vector field in the fundamental representation of $SU(2)_L$ as the only non-standard degree of freedom. This kind of field may appear in different scenarios such as Compositness, Gauge-Higgs unification and extradimensional scenarios. We study the model in which a $Z_2$ symmetry is manifest, making the neutral CP-even component of the new vector field a vectorial dark matter candidate. We constraint the parameter space through LEP and LHC data, as well as from current dark matter searches. Additionally, comment on the implications of perturbative unitarity are presented. We find that the model is highly constrained but a small region of the parameter space can provide a viable DM candidate. On the other hand, unitarity demands an UV completion at an scale below 10 TeV. Finally we contrast our predictions on mono-jet, -$Z$, -Higgs production with the ones obtained in the inert Two Higgs Doublet Model.

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