QCD calculations and measurements of vector boson + heavy flavour processes at the LHC

概述，目的和目标：该研究正在理论和实验联合进行。候选人将致力于开发高阶QCD计算的创新技术，并将其应用于获得关键LHC过程的高精度预测。一个特别的重点将放在矢量玻色子生产与重味。在实验方面，学生将通过控制室轮班为ATLAS探测器的操作做出贡献，并在JetEtmiss小组内完成作者资格认证任务，该任务旨在使用机器学习技术改进和开发喷气标记方法。学生还将使用ATLAS探测器对LHC运行3数据集进行分析。测量将与学生在其工作的理论部分中开发的计算和工具有关。这样的计算和测量对于提高我们对这些过程的理解和建模是很重要的，并且不仅在它们本身作为微扰QCD的测试方面是有趣的，而且在质子部分子分布函数的背景下也是有趣的，其中W+c对鲜为人知的奇异夸克非常敏感。有一些可能的扩展和进一步的发展，在理论和实验方面，这将被定义为该项目的发展。研究方法的新奇：这项工作将需要开发新的和创新的技术和工具的理论计算，包括考虑那些有关的定义喷气味。这些测量将是第一次使用LHC运行3数据，并将首次应用与相关理论工作相关的新的最先进的分析技术。结果将在高知名度的会议上传播，结果将发表在参考期刊论文（和/或ATLAS CONF/PUB笔记）中。

Overview, aims and objectives:The studentship is being conducted jointly in Theory and Experiment. The candidate will work on developing innovative techniques for higher-order QCD calculations, and apply them to obtain high-precision predictions for key LHC processes. A particular emphasis will be put on vector boson production in association with heavy flavour. On the experimental side, the student will contribute to the operation of the ATLAS detector via control room shifts, and an authorship qualification task within the JetEtmiss group, which aims to improve and develop jet tagging methods using machine learning techniques. The student will also perform analysis on the LHC Run 3 dataset using the ATLAS detector. The measurements will be related to the calculations and tools that the student has developed during the theoretical parts of his work. Such calculations and measurements are important to improve our understanding and modelling of these processes, and are interesting not only in their own right as a test of perturbative QCD, but also e.g. in the context of proton parton distribution functions, where W+c is highly sensitive to the poorly known strange quark. There are a number of possible extensions and further developments, on both the theoretical and experimental side, which will be defined as the project evolves.Novelty of research methodology:The work will require development of new and innovative techniques and tools for the theory calculations, including consideration of those related to the definition of jet flavour. The measurements will be the first of their kind using the LHC Run 3 data, and will apply for the first time new, state-of-the-art analysis techniques related to the associated theoretical work. The results will be disseminated in high-profile conferences and the results will be published in refereed journal papers (and/or ATLAS CONF/PUB notes).