Consolidated Grant

实验粒子和天体粒子物理(EPAP)小组的目的是通过研究基本粒子的性质来解决我们对物质理解中的一些主要开放问题。特别是，我们的目标是解决中微子部门的许多公开问题。我们还在继续寻找新的物理学，解决来自天体物理学来源的质子衰变、超轻暗物质和引力波等现象。通过我们长期参与的日本实验计划：T2K、Super-Kamiokande和Hyper-Kamiokande，我们致力于结合束流和大气中微子样本进行精密中微子振荡测量，目的是最终理解轻子CP破坏对解释我们宇宙的物质-反物质不对称的贡献。为了促进成功的测量，我们正在寻求对相关中微子相互作用截面(特别是电子中微子截面)、探测器响应和系统不确定性的详细了解。我们还通过开发分析大数据量所需的计算机软件基础设施和维护超级神冈的外部探测器来支持这些努力。我们还在加拿大的SNO实验中发挥重要作用，该实验将收集其主要数据，以在此赠款期间搜索无中微子双β衰变，从而探测中微子的性质和质量。我们的工作将通过分析协调和对时间相关背景和探测器响应的仔细研究，实现这一测量和其他关键测量(例如，进一步探测振荡参数的太阳和反应堆中微子光谱)。通过冰立方，我们获得中微子能谱的最高端，准备和搜索其中的新物理，天体物理中微子样本，并对大气中微子数据的洛伦兹破坏施加限制。该小组的另一个目标是在许多统一理论的推动下，将广泛的唯象专业知识与我们在Super-K和Hyper-K的实验经验结合起来，寻找质子衰变。将通过原子干涉仪观测站网络(AION)研究更多的新物理学。我们对开发这一系列英国量子干涉仪探测器的贡献，以探索超轻暗物质候选者和探测来自地物理来源的引力波，将涉及详细的灵敏度研究，以指导设计。

The aim of the Experimental Particle & Astroparticle Physics (EPAP) group is to address some of themajor open questions in our understanding of matter through the study of the nature of fundamentalparticles. In particular, we aim to address many of the open questions in the neutrino sector. Wealso continue to search for new physics, addressing phenomena including proton decay, ultra-light darkmatter and gravitational waves from astrophyiscal sources.Through our long-standing involvement in the Japanese programme of experiments: T2K,Super-Kamiokande and Hyper-Kamiokande, we work on precision neutrino oscillation measurementscombining both beam and atmospheric neutrino samples, aiming to ultimately understand thecontribution of leptonic CP violation towards explaining the matter-antimatter asymmetry of ouruniverse. To facilitate successful measurements, we are pursuing a detailed understanding ofrelevant neutrino interaction cross-sections (in particular electron neutrino cross-sections),detector response and systematic uncertainties. We also support these efforts by developing thecomputing software infrastructure required to analyse the large data volumes and maintaining theouter detector for Super-Kamiokande.We also play an important role in the SNO+ experiment in Canada, which will collect its main datato search for neutrino-less double beta decay, hence probing the nature and mass of the neutrino,during this grant period. Our work will enable this and other key measurements (such as solar andreactor neutrino spectra that further probe oscillation parameters) through analysis coordinationand a careful study of time correlated backgrounds and detector response.Through IceCUBE we access the very high end of the neutrino energy spectrum, preparing andsearching for new physics within, the astrophysical neutrino sample, and placing limits on Lorentzviolation from atmospheric neutrino data.Another goal of the group is the search for proton-decay, motivated by many unified theories,combining extensive phenomenological expertise with our experimental experience in Super-K andHyper-K. Further new physics will be addressed through the Atomic Interferometer ObservatoryNetwork (AION). Our contributions to the development of this series of UK-based quantum interferometerdetectors to explore ultra-light dark matter candidates and detect gravitational waves fromastrophysical sources, will involve detailed sensitivity studies to inform the design.