Higgs boson physics with the ATLAS experiment at the Large Hadron Collider

这项研究的重点是2018年新观察到的希格斯玻色子相互作用：希格斯玻色子衰变到b夸克，以及与W或Z玻色子(VH)相关的希格斯产生。对希格斯玻色子的精确表征是对撞机物理学的首要任务，它解决了物质的基本成分是什么以及它们如何相互作用的关键问题。最初的工作将集中在使用完整的大型强子对撞机RUN-2数据集对这些过程的遗留测量。随后，重点将放在为大型强子对撞机RUN-3数据的分析做准备上，例如，利用H&GT；BB开发VH类双玻色子事件的差值分布测量。这些测量将需要第三次大型强子对撞机的增强统计数据，学生身份将包括重新启用ATLAS和从2021年开始获取第一次第三次数据。他们还将受益于增加的RUN-3质心能量，14TeV。这些测量将是限制超越标准模型(BSM)对VH耦合的贡献的强大工具，特别是在Higgs玻色子具有高动量并需要特殊重建技术的“增强”区域，并将在精确测量和BSM解释的交叉点上提供工作空间。

This studentship focuses on Higgs boson interactions that were newly observed in 2018: the Higgs boson's decay to b-quarks, and Higgs production in association with a W or Z boson (VH). Precise characterisation of the Higgs boson is a top priority in collider physics, addressing the key question of what are the basic constituents of matter and how do they interact. Initial work will focus on the legacy measurements of these processes using the full LHC Run-2 dataset. Subsequently the focus will be on preparing for analysis of LHC Run-3 data, for example developing differential distribution measurements in VH-like diboson events with H->bb. These measurements will require the enhanced statistics from LHC Run 3 and the studentship will include the recommissioning of ATLAS and the acquisition of first Run-3 data, starting in 2021. They will also benefit from the increased Run-3 centre-of-mass energy, 14TeV. These measurements will be a powerful tool for constraining Beyond Standard Model (BSM) contributions to the VH couplings, especially in the 'boosted' regime where the Higgs boson has high momentum and needs special reconstruction techniques, and will give scope for working at the intersection of precision measurement and BSM interpretation.