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arXiv 2006.01164hep-phhep-ex
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用汤川力探测希格斯玻色子

Probing the Higgs boson through Yukawa force

Avik Banerjee, Gautam Bhattacharyya

摘要:

大型强子对撞机的ATLAS和CMS合作观测到了希格斯玻色子衰变为底夸克-反夸克对,并确定了希格斯玻色子与顶夸克-反夸克对的耦合是希格斯产生的一种模式。这强调了LHC中汤川力的发现。我们证明了这一发现的影响,希格斯粒子的性质是相关的电弱对称性破缺的动力学。我们发现,这些测量大大压缩了新物理学的允许窗口,有助于希格斯耦合与弱规范玻色子和第三代夸克。在HL-LHC和未来的希格斯工厂的预期限制也显示。我们将这些约束投射到标准模型之外的一些激励场景的参数空间上。我们把它们分为两大类,即复合希格斯和它的RS对偶,以及各种类型的多希格斯模型。后一类包括单重标量模型、I型、II型和BGL型两重希格斯模型,以及Georgi和Machacek等标量三重模型。

英文摘要:

The ATLAS and CMS collaborations of the LHC have observed that the Higgs boson decays into the bottom quark-antiquark pair, and have also established that the Higgs coupling with the top quark-antiquark pair is instrumental in one of the modes for Higgs production. This underlines the discovery of the Yukawa force at the LHC. We demonstrate the impact of this discovery on the Higgs properties that are related to the dynamics of electroweak symmetry breaking. We show that these measurements have considerably squeezed the allowed window for new physics contributing to the Higgs couplings with the weak gauge bosons and the third generation quarks. The expected constraints at the HL-LHC and future Higgs factories are also shown. We project these constraints on the parameter space of a few motivated scenarios beyond the Standard Model. We pick them under two broad categories, namely, the composite Higgs and its RS dual, as well as various types of multi-Higgs models. The latter category includes models with singlet scalars, Type I, II and BGL-type two-Higgs doublet models, and models with scalar triplets a la Georgi and Machacek.

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