在MadAnalysis 5和Rivet框架中利用增强顶夸克搜索新物理
Searches for new physics with boosted top quarks in the MadAnalysis 5 and Rivet frameworks
AI总结：
本文在MadAnalysis 5和Rivet框架中实现HEPTopTagger算法，用于增强顶夸克重建，并评估其对标准模型有效场论新物理的敏感性，得出关于标准模型类顶夸克衰变假设的重要结论。
摘要：
高动量顶夸克是对撞机实验中检验新物理模型的自然物理系统，而喷注子结构方法既是利用其最大衰变模式的关键，也是缓解增强系统在探测器中日益准直时所面临分辨率困难的关键。为了用于新物理解释研究，至关重要的是相关方法能在允许对LHC结果进行重新解释的分析框架（如MadAnalysis 5和Rivet）中实现。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功能的使用，以探索增强顶夸克重建性能对标准模型有效场论中新物理贡献的敏感性。这项研究的结果对相关对撞机分析中隐含的标准模型类顶夸克衰变假设，以及通过使用HEPTopTagger选择的增强半轻子顶-反顶事件构建的运动学观测量来约束标准模型有效场论的前景，得出了重要结论。
英文摘要：
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 as MadAnalysis 5 and Rivet. We describe the implementation of the HEPTopTagger algorithm 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 semileptonic top-antitop events selected using HEPTopTagger.
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