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arXiv 2109.07385hep-ph
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具有暗扇形衰变的轻暗物质模型的对撞机搜索

Collider search of light dark matter model with dark sector decay

Yu Cheng, Wei Liao, Qi-Shu Yan

摘要:

我们探讨了暗物质遗迹密度不是由热机制直接产生的,而是由其他较重暗扇区粒子衰变产生的,而这些较重暗扇区粒子又可以由热冻结机制产生。使用一个具体的模型与轻暗物质从暗扇区衰变,我们研究了碰撞签名的暗扇区粒子与希格斯生产过程。我们发现,未来的轻子对撞机可以是一个更好的地方来探测这种轻暗物质模型的签名比强子对撞机,如大型强子对撞机。同时发现,相对于质心能量为350 GeV的Higgs工厂,质心能量为250 GeV的Higgs工厂具有更好的分辨这种轻暗物质模型特征的潜力。

英文摘要:

We explore the possibility that the dark matter relic density is not produced by thermal mechanism directly, but by the decay of other heavier dark sector particles which on the other hand can be produced by the thermal freeze-out mechanism. Using a concrete model with a light dark matter from dark sector decay, we study the collider signature of the dark sector particles in association with Higgs production processes. We find that the future lepton colliders can be a better place to probe the signature of this kind of light dark matter model than the hadron collider such as LHC. Meanwhile, it is found that a Higgs factory with center of mass energy 250 GeV has a better potential to resolve the signature of this kind of light dark matter model than the Higgs factory with center of mass energy 350 GeV.

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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