Cross Section Systematics and Neutrino Oscialltion Analysis in DUNE

深地下中微子实验（DUNE）是下一代中微子振荡实验的旗舰，旨在以前所未有的精度和精度测量中微子的振荡。这将使DUNE能够研究中微子物理学中一些最大的问题，如中微子质量层次和CP破坏。由于DUNE将使用液态氩时间投影室探测器技术，DUNE最大的挑战之一将是了解中微子如何与氩核相互作用。因为中微子是轻的中性粒子，所以在粒子探测器中不可能直接看到它们；我们必须通过中微子与探测器内的原子相互作用时产生的带电粒子间接地研究它们。因此，可靠的模型——具有良好动机的不确定性——中微子如何确切地相互作用，对于DUNE回答有关这些粒子基本性质的更深层次问题至关重要。牛津中微子加速器小组以多种方式参与DUNE：远探测器和近探测器数据采集系统的开发工作，DUNE- prism和MaCh3振荡框架，以及相互作用建模和不确定性的开发。该项目的目的是改进DUNE的振荡分析框架，以便产生比以前产生的更复杂的灵敏度估计。这种改进振荡分析的基石将是更新的中微子-氩相互作用模型和新的不确定度估计。目的是让学生在DUNE相互作用建模和不确定性组内工作，以实现DUNE振荡框架中中微子-氩相互作用的更现代模型。这项工作的一个关键组成部分是应用于模型的不确定性，在许多情况下，可能需要开发新的不确定性，以确保振荡拟合具有适当的自由度。学生可以结合理论理解和模型与数据的比较来评估必要的自由度，并可以根据需要实现新的不确定性。最终，本项目旨在将这些改进应用于MaCh3 DUNE振荡分析（得到牛津加速器中微子组其他成员的支持），以评估对DUNE整体振荡灵敏度的影响。该学生将在DUNE合作中工作，该项目将使学生在编程，数据模拟和分析方面获得丰富的经验。

The Deep Underground Neutrino Experiment, DUNE, is a flagship next-generation neutrino oscillation experiment, which aims to measure the oscillation of neutrinos with accuracy and precision that have never been achieved before. This will allow DUNE to study some of the biggest questions in neutrino physics such as the neutrino mass hierarchy and CP violation. Since DUNE will use liquid argon time projection chamber detector technology, one of the biggest challenges for DUNE will be understanding how neutrinos interact with argon nuclei. Because neutrinos are light, neutral particles they are impossible to see directly in particle detectors; we have to study them indirectly through the charged particles produced when a neutrino interacts with atoms inside the detector. Reliable modelling -- with well-motivated uncertainties -- of how exactly neutrinos interact is therefore vital for DUNE to answer deeper questions about the fundamental properties of these particles. The Oxford Accelerator Neutrino Group is involved in DUNE in a number of ways: development work for the far detector and near detector data acquisitions systems, the DUNE-PRISM and MaCh3 oscillation frameworks, and in development of the interaction modelling and uncertainties.The aim of this project is to improve DUNE's oscillation analysis framework, in order to produce a significantly more sophisticated sensitivity estimation than has been previously produced. A cornerstone of this improved oscillation analysis will be updated neutrino-argon interaction models and new uncertainty estimations. The aim is for the student to work within the DUNE interaction modelling and uncertainties group to implement more modern models of neutrino-argon interactions to the DUNE oscillation framework. A key component of this work is the uncertainties applied to the models, and in many cases new uncertainties may need to be developed to ensure the oscillation fit has the appropriate degrees of freedom. The student may evaluate necessary degrees of freedom using a combination of theoretical understanding and comparison of models to data, and may implement new uncertainties as required. Ultimately, this project aims to implement these improvements in the MaCh3 DUNE oscillation analysis (supported by other members of the Oxford Accelerator Neutrino group) in order to evaluate the impact on DUNE's overall oscillation sensitivity. The student will work within the DUNE collaboration, and this project will allow the student to gain strong experience in programming, data simulation, and analysis.