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arXiv 2404.08062hep-ph
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通过类轴子粒子产生双 Higgs 粒子

Di-Higgs production via Axion-Like Particles

Fabian Esser, Maeve Madigan, Alexandre Salas-Bernardez, Veronica Sanz, Maria Ubiali

AI总结:

本文研究通过类轴子粒子伴随 Z 或 γ 产生双 Higgs 的过程,评估 LHC Run 2 约束,并提出高能轻子型 Z 搜索策略以探测 TeV 量级及限制 ALP-顶夸克耦合。

摘要:

由于类轴子粒子(ALP)的赝标量性质,通过 ALP 产生两个 Higgs 玻色子的 CP 守恒过程必然涉及一个额外的 Z 或 γ 玻色子。我们考察了 LHC Run 2 双 Higgs 搜索给出的现有约束,发现尽管末态中存在额外对象,这些搜索对 ALP 与胶子以及三玻色子耦合的组合在 TeV 量级范围内具有敏感性。此外,我们提出了一种包含高能轻子型 Z 玻色子的专门搜索策略。这一改进的 ALP 诱导产生过程将能够识别 hh → 4 个 b 喷注末态,并有可能利用 LHC Run 2 的数据探测 TeV 量级。该产生过程也可以通过顶夸克与 ALP 之间的耦合发生。我们将当前对双 Higgs 产生的约束转化为对 ALP-顶夸克耦合的新限制。

英文摘要:

Due to the pseudo-scalar nature of the axion-like particle (ALP), the CP- conserving production of two Higgs bosons via the ALP necessarily involves an additional Z or $γ$ boson. We examine the existing constraints from di-Higgs searches at Run 2 of the LHC and find that, despite the presence of extra objects in the final state, these searches are sensitive to a combination of ALP couplings to gluons and three-bosons in the TeV scale range. Additionally, we propose a specialized search strategy incorporating an energetic leptonic Z boson. This refined ALP-induced production process would allow for the identification of the h h $\rightarrow$ 4 b-jet final state and could potentially probe the TeV scale using data from Run 2 of the LHC. This production process can also occur through a coupling between the top quark and the ALP. We translate the current constraints on di-Higgs production into new limits on the ALP-top coupling.

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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