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arXiv 1707.03094hep-ph
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在圆形正负电子对撞机上通过希格斯玻色子精确测量探索费米暗物质

Exploring Fermionic Dark Matter via Higgs Boson Precision Measurements at the Circular Electron Positron Collider

Qian-Fei Xiang, Xiao-Jun Bi, Peng-Fei Yin, Zhao-Huan Yu

摘要:

本文研究了费米子暗物质(DM)对圆形正负电子对撞机(CEPC)投射Higgs粒子精确测量的影响,包括单圈效应对$e^+e^-\to Zh$截面和希格斯玻色子双光子衰变的影响,以及树能级效应对希格斯玻色子不可见衰变的影响。作为启发性的例子,我们讨论了两个UV完全DM模型,其暗区包含电弱多重态,通过汤川耦合与希格斯玻色子玻色子相互作用。CEPC的灵敏度,这些模型和当前的限制DM检测和对撞机实验进行了研究。我们发现,存在一些参数区域,在CEPC的希格斯测量将是互补的,目前DM搜索。

英文摘要:

We study the impact of fermionic dark matter (DM) on projected Higgs precision measurements at the Circular Electron Positron Collider (CEPC), including the one-loop effects on the $e^+e^-\to Zh$ cross section and the Higgs boson diphoton decay, as well as the tree-level effects on the Higgs boson invisible decay. As illuminating examples, we discuss two UV-complete DM models, whose dark sector contains electroweak multiplets that interact with the Higgs boson via Yukawa couplings. The CEPC sensitivity to these models and current constraints from DM detection and collider experiments are investigated. We find that there exist some parameter regions where the Higgs measurements at the CEPC will be complementary to current DM searches.

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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