Consolidated Grant

实验粒子和天体粒子物理学（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的理解中的一些主要问题。特别是，我们的目标是解决中微子领域的许多悬而未决的问题。我们还继续探索新的物理学，解决包括质子衰变、超轻暗物质和天体物理学源引力波在内的现象。通过长期参与日本的实验计划：T2 K，Super-Kamiokande和Hyper-Kamiokande，我们致力于精确的中微子振荡测量，结合束流和大气中微子样品，旨在最终理解轻子CP破坏对解释我们宇宙的物质-反物质不对称性的影响。为了促进成功的测量，我们正在追求一个详细的了解ofrelevant中微子相互作用截面（特别是电子中微子截面），探测器的响应和系统的不确定性。我们还支持这些努力，开发分析大量数据所需的计算软件基础设施，并维护Super-Kamiokande的外部探测器。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寻找中微子较少的双β衰变，从而探测中微子的性质和质量。我们的工作将使这一点和其他关键的测量（如太阳和反应堆中微子光谱，进一步探测振荡参数）通过分析协调和时间相关的背景和探测器响应的仔细研究。通过IceCUBE我们访问中微子能谱的非常高端，准备和寻找新的物理，天体物理中微子样品，该小组的另一个目标是寻找质子衰变，这是由许多统一理论激发的，将广泛的唯象学专业知识与我们在Super-K和Hyper-K中的实验经验相结合。将通过原子干涉仪观测网进一步研究新的物理学。我们对这一系列基于英国的量子干涉仪探测器的开发做出的贡献是探索超轻暗物质候选者和探测来自天体物理源的引力波，将涉及详细的灵敏度研究，以告知设计。

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.