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arXiv 1702.08457hep-phhep-ex
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暗最小味违反中的顶味暗物质

Top-Flavoured Dark Matter in Dark Minimal Flavour Violation

Monika Blanke, Simon Kast

摘要:

我们在暗最小味违反理论的框架下研究了一个顶味暗物质的简化模型。在这种情况下,暗物质味三重态与右手向上型夸克的耦合构成了味和CP破坏的唯一新来源。该模型的参数空间受到LHC搜索与丢失的能量末态,中性$D$介子混合数据,观测到的暗物质遗迹丰度,并在直接检测实验中的信号的缺乏。我们依次考虑所有这些约束,研究它们对允许参数空间的影响。强加的质量限制和耦合基准从对撞机搜索,然后我们进行了综合分析的所有其他约束,揭示他们的非平凡的相互作用。特别有趣的是直接探测和遗迹丰度限制的结合,对暗物质耦合矩阵的结构产生了严重影响。我们指出,即将到来的直接检测实验,如XENON 1 T,XENONNT,LUX-ZEPLIN和DARWIN,未来的界限将排除很大一部分参数空间,并将DM质量推到更高的值。

英文摘要:

We study a simplified model of top-flavoured dark matter in the framework of Dark Minimal Flavour Violation. In this setup the coupling of the dark matter flavour triplet to right-handed up-type quarks constitutes the only new source of flavour and CP violation. The parameter space of the model is restricted by LHC searches with missing energy final states, by neutral $D$ meson mixing data, by the observed dark matter relic abundance, and by the absence of signal in direct detection experiments. We consider all of these constraints in turn, studying their implications for the allowed parameter space. Imposing the mass limits and coupling benchmarks from collider searches, we then conduct a combined analysis of all the other constraints, revealing their non-trivial interplay. Especially interesting is the combination of direct detection and relic abundance constraints, having a severe impact on the structure of the dark matter coupling matrix. We point out that future bounds from upcoming direct detection experiments, such as XENON1T, XENONnT, LUX-ZEPLIN, and DARWIN, will exclude a large part of the parameter space and push the DM mass to higher values.

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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