STFC Experimental Particle Physics 2018 Consolidated Grant

苏塞克斯实验粒子物理(EPP)小组有11名学术教员，专注于以下主要研究领域：-探索能量前沿(使用ATLAS实验、ATLAS升级、对撞机未来的机会)-中微子物理(使用SNO+、NOVA、DUNE、SBND和JSNS2实验)-基于液体Ar的直接物质搜索(使用DEAP/Darkside实验)-中子电偶极矩的精确测量(nEDM实验)。该小组参与了GridPP，苏塞克斯拥有一个经过认证的网格第二层计算集群。在ATLAS，我们寻找超越目前对粒子物理的理解的物理。我们详细研究粒子相互作用，以验证我们目前的理解，但也寻找新过程的证据。这包括对暗物质的探索--暗物质似乎存在于宇宙中，但没有被观测到，也没有被我们目前描述我们对物质的理解的模型所解释。在即将到来的大型强子对撞机光度升级中，我们将继续领先于分析和触发(快速实时决定哪些数据是重要的，应该保留)。在开发ATLAS和ATLAS升级工作的同时，我们将保持低水平的参与未来可能发生的对撞机的研发和物理研究，旨在进一步加深我们对物质和宇宙的了解。我们还通过建立和操作实验来尝试和观察暗物质直接在这些实验中相互作用来直接寻找暗物质。我们参与了加拿大的DEAP-3600实验。使用液态Ar进行直接探测搜索的国际社会已经联合起来支持Darkside-20k实验，这将提供目前技术上可能的最佳灵敏度。中微子已经提供了一些意想不到的惊喜，它的研究承诺回答关于物质本质的基本问题。在SNO+，我们寻找可以揭示中微子基本性质的罕见衰变。在Nova，我们希望更好地了解极小质量的中微子，并测试物质和反物质是否有不同的行为方式。这项研究将在沙丘上继续进行(未来的大型液氮实验)。结合SNO+和沙丘/新星实验的研究，有可能解释迄今为止科学上最大的问题之一：为什么宇宙目前是由物质组成的，为什么不再有反物质？有一些迹象表明，除了我们目前所知的三个中微子之外，还有更多的中微子存在。SBND实验将寻找新中微子的证据，并允许我们为未来的沙丘实验建立对该技术的直接经验。JSNS2实验将提供对之前(但有争议的)额外中微子观测的直接测试，但背景明显较少，探测器技术也更好。它还为液体闪烁体探测器技术和光学校准开发提供了一个很好的试验台。nEDM实验以精确的精度研究中子的性质，通过以完全不同的方式寻找物质和反物质之间行为差异的证据来补充ATLAS、中微子和暗物质计划。我们通过分析数据和对技术成果的贡献来参与实验。这在我们的博士生和我们的研究中培养了技能，这些发展产生了强大的影响。我们将继续这样做，特别是在人工智能领域，利用我们在研究中使用的技术。我们会继续积极与本地业界互动，建立更紧密的联系。此外，我们将在地方、国家和国际层面以创新的方式将我们的研究带给学校、教师和普通公众。

The Sussex Experimental Particle Physics (EPP) group counts eleven academic faculty members and focuses on the following main research areas: - the exploration of the Energy Frontier (using the ATLAS experiment, ATLAS Upgrades, future opportunities at colliders)- Neutrino Physics (using the SNO+, NOVA, DUNE, SBND, and JSNS2 experiments)- liquid argon-based direct matter searches (with the DEAP/DarkSide experiments)- precision measurements of the neutron electric dipole moment (the nEDM experiment). The group participates in GridPP and Sussex hosts a certified Grid Tier-2 computing cluster.At ATLAS, we search for physics beyond the current understanding of particle physics. We study in detail the particle interactions to verify our current understanding, but also look for evidence of new processes. This includes the search for Dark Matter - the matter that seems to exist in the Universe but has not been observed or is accounted for in our current models describing our understanding of matter. We will continue to lead on analysis and the trigger (which makes fast real-time decisions about what data is important and should be kept) at the upcoming LHC luminosity upgrades. In parallel with the exploitation of ATLAS and the ATLAS upgrade work, we will maintain a low-level involvement in R&D and physics studies for possible future colliders, aiming to further deepen our understanding of matter and the Universe.We also search directly for Dark Matter by building and operating experiments to try and observe Dark Matter interacting directly inside these experiments. We are involved in the DEAP-3600 experiment in Canada. The international community in direct detection searches using liquid argon has come together to put its weight behind the DarkSide-20k experiment, which will provide the best sensitivity that is currently technically possible.The neutrino has already provided some unexpected surprises and its study promises to answer fundamental questions about the nature of matter. At SNO+, we search for rare decays that could reveal the fundamental nature of neutrinos. At NOvA, we hope to better understand the extremely small masses of neutrinos and test whether matter and anti-matter perhaps behave in different ways. This study will be continued at the DUNE (a future, large-scale liquid-argon experiment). The combination of the studies at the SNO+ and DUNE/NOvA experiments has the potential to explain one of science's biggest questions to date: why is the Universe currently made out of matter and why is there no anti-matter any more?There have been some hints that there are more than the three neutrinos that we so far know about. The SBND experiment will look for evidence for new neutrinos and allow us to build up direct experience with the technology for the future DUNE experiment. The JSNS2 experiment will provide a direct test of previous (but disputed) observations of extra neutrinos, but with significantly fewer backgrounds and better detector technology. It also provides a good test-bed for liquid scintillator detector technology and optical calibration developments.The nEDM experiment studies the properties of neutrons with exquisite precision, complementing the ATLAS, neutrino and dark matter programmes by looking in a completely different way for evidence of a difference in behaviour between matter and antimatter.We participate in experiments through the analysis of data and contributions to technical deliverables. This builds skills among our PhD students and our researches and these developments have led to strong impact. We will continue to do this, in particular in the area of Artificial Intelligence, exploiting techniques that we use in our research. We will continue to actively interact with local industry and forge stronger links. Furthermore, we will bring our research to schools, teachers and the general public in innovative ways on a local, national and international level.