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arXiv 2302.04892hep-phhep-ex
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使用简化模型对通过重希格斯玻色子产生的暗物质进行的新LHC搜索

A new LHC search for dark matter produced via heavy Higgs bosons using simplified models

Danyer Perez Adan, Henning Bahl, Alexander Grohsjean, Victor Martin Lozano, Christian Schwanenberger, Georg Weiglein

AI总结:

本文提出在LHC上利用简化模型框架搜索通过重希格斯玻色子产生的暗物质,分析了伴随底夸克的中性希格斯产生及其末态,并展示了其在超标准模型物理中的普适性。

摘要:

在LHC上,对通过标量共振产生的暗物质进行搜索,且末态由标准模型(SM)粒子和缺失横动量组成,具有高度相关性。受暗物质portal模型启发,现有大多数搜索针对不平衡衰变拓扑进行了优化,即缺失动量反冲可见SM粒子。在本研究中,我们表明现有搜索对更广泛的模型类别也很敏感,我们通过最近提出的简化模型框架对其进行了表征。我们指出,针对具有平衡衰变拓扑的模型,可以通过更专用的分析策略进一步改进搜索。为此,我们研究了伴随底夸克的中性希格斯产生的新搜索的可行性,末态为 $b \ar b Z + p_\ ext{T}^\ ext{miss}$,并进行了详细的对撞机分析。我们在不同简化模型拓扑中的预测结果可以很容易地在广泛的超SM物理模型中重新解释,我们以带有额外赝标量希格斯玻色子的双希格斯二重态模型为例明确展示了这一点。

英文摘要:

Searches for dark matter produced via scalar resonances in final states consisting of Standard Model (SM) particles and missing transverse momentum are of high relevance at the LHC. Motivated by dark-matter portal models, most existing searches are optimized for unbalanced decay topologies for which the missing momentum recoils against the visible SM particles. In this work, we show that existing searches are also sensitive to a wider class of models, which we characterize by a recently presented simplified model framework. We point out that searches for models with a balanced decay topology can be further improved with more dedicated analysis strategies. For this study, we investigate the feasibility of a new search for bottom-quark associated neutral Higgs production with a $b \bar b Z + p_\text{T}^\text{miss}$ final state and perform a detailed collider analysis. Our projected results in the different simplified model topologies investigated here can be easily reinterpreted in a wide range of models of physics beyond the SM, which we explicitly demonstrate for the example of the Two-Higgs-Doublet model with an additional pseudoscalar Higgs boson.

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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