Searches for new physics with boosted top quarks in the MadAnalysis 5 and Rivet frameworks

Searches for new physics with boosted top quarks in the MadAnalysis 5 and Rivet frameworks
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在 MadAnalysis 5 和 Rivet 框架中搜索具有增强顶夸克的新物理

DOI:
10.1140/epjc/s10052-023-11779-2
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发表时间:
2023
期刊:
The European Physical Journal C
影响因子:
--
通讯作者:
Araz J
Araz J
中科院分区:
--
文献类型:
--
作者:
Araz J

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高动量顶夸克是对撞机实验中用于测试新物理模型的自然物理系统,而射流子结构方法是利用其最大衰变模式和缓解分辨率困难的关键,因为增强系统在探测器中变得越来越准直。为了在新物理解释研究中使用,相关方法必须在分析框架中实施,以便重新解释大型强子对撞机的结果,例如 MadAnalysis 5 和 Rivet,这一点至关重要。我们描述了 HEPTopTagger 算法在这两个框架中的实现,并举例说明了所得到的功能的使用,以探索增强的顶部重建性能对标准模型有效场论的新物理贡献的敏感性。这项研究的结果得出了关于相关对撞机分析中类标准模型顶夸克衰变的隐含假设的重要结论,以及通过使用 HEPTopTagger 选择的增强半轻子事件构建的运动学可观测量来约束标准模型有效场论的前景。
High-momentum top quarks are a natural physical system in collider experiments for testing models of new physics, and jet substructure methods are key both to exploiting their largest decay mode and to assuaging resolution difficulties as the boosted system becomes increasingly collimated in the detector. To be used in new-physics interpretation studies, it is crucial that related methods get implemented in analysis frameworks allowing for the reinterpretation of the results of the LHC such asMadAnalysis 5andRivet. We describe the implementation of theHEPTopTaggeralgorithm in these two frameworks, and we exemplify the usage of the resulting functionalities to explore the sensitivity of boosted top reconstruction performance to new physics contributions from the Standard Model Effective Field Theory. The results of this study lead to important conclusions about the implicit assumption of Standard-Model-like top quark decays in associated collider analyses, and for the prospects to constrain the Standard Model Effective Field Theory via kinematic observables built from boosted semi-leptonicevents selected usingHEPTopTagger.
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