STFC Experimental Particle Physics 2018 Consolidated Grant

STFC实验粒子物理2018年综合资助

基本信息

批准号：
ST/S000798/1
负责人：
Simon Peeters
金额：
$ 223.15万
依托单位：
University of Sussex
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2019
资助国家：
英国
起止时间：
2019 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=ST%2FS000798%2F1
关键词：
STFC Experimental Particle Physics 2018

项目摘要

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.

苏塞克斯实验粒子物理 (EPP) 小组拥有 11 名学术教员，重点关注以下主要研究领域： - 能源前沿探索（使用 ATLAS 实验、ATLAS 升级、对撞机的未来机会） - 中微子物理（使用SNO+、NOVA、DUNE、SBND 和 JSNS2 实验）- 基于液氩的直接物质搜索（使用 DEAP/DarkSide 实验）- 精确测量中子电偶极矩（nEDM 实验）。该小组参与了 GridPP，苏塞克斯托管了经过认证的 Grid Tier-2 计算集群。在 ATLAS，我们寻找超出当前对粒子物理学理解的物理学。我们详细研究粒子相互作用以验证我们目前的理解，同时也寻找新过程的证据。这包括寻找暗物质——这种物质似乎存在于宇宙中，但尚未被观察到或在我们当前描述物质理解的模型中得到解释。在即将到来的 LHC 光度升级中，我们将继续引领分析和触发（对哪些数据重要且应保留的数据做出快速实时决策）。在开发ATLAS和ATLAS升级工作的同时，我们将保持对未来可能的对撞机的研发和物理研究的低水平参与，旨在进一步加深我们对物质和宇宙的理解。我们还直接寻找暗物质通过构建和操作实验来尝试观察暗物质在这些实验中直接相互作用。我们参与了加拿大的DEAP-3600实验。使用液氩进行直接探测搜索的国际社会已经齐心协力支持 DarkSide-20k 实验，该实验将提供目前技术上可能的最佳灵敏度。中微子已经带来了一些意想不到的惊喜，其研究有望给出答案关于物质本质的基本问题。在 SNO+，我们寻找能够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的中微子质量，并测试物质和反物质是否可能以不同的方式表现。这项研究将在 DUNE（未来的大规模液氩实验）继续进行。 SNO+ 和 DUNE/NOvA 实验的研究相结合，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构成的，以及为什么不再有反物质？暗示中微子的数量远不止我们目前所知的三种。 SBND 实验将寻找新中微子的证据，并使我们能够为未来的 DUNE 实验积累该技术的直接经验。 JSNS2 实验将直接测试之前（但有争议的）额外中微子的观测结果，但背景要少得多，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良好的测试平台。nEDM 实验以极高的精度研究中子的特性，通过以完全不同的方式寻找中子的证据来补充 ATLAS、中微子和暗物质项目。物质和反物质之间的行为差异。我们通过分析数据和贡献技术成果来参与实验。这培养了我们的博士生和我们的研究技能，这些发展产生了巨大的影响。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。我们将继续积极与当地业界互动，建立更紧密的联系。此外，我们将以创新的方式在地方、国家和国际层面将我们的研究成果带给学校、教师和公众。

项目成果

期刊论文数量（10）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Measurements of top-quark pair single- and double-differential cross-sections in the all-hadronic channel in pp collisions at $$ \sqrt{\mathrm{s}} $$ = 13 TeV using the ATLAS detector

使用 ATLAS 探测器在 $$ sqrt{mathrm{s}} $$ = 13 TeV 的 pp 碰撞中测量全强子通道中的顶夸克对单微分和双微分横截面

DOI：
10.1007/jhep01(2021)033
发表时间：
2021-01-08
期刊：
Journal of High Energy Physics
影响因子：
5.4
作者：
G. Aad;B. Abbott;D. Abbott;A. A. Abud;K. Abeling;D. K. Abhayasinghe;S. H. Abidi;O. AbouZeid
通讯作者：
O. AbouZeid

Measurement of the t t ¯ Z and t t ¯ W cross sections in proton-proton collisions at s = 13 TeV with the ATLAS detector

使用 ATLAS 探测器测量 s = 13 TeV 质子-质子碰撞中的 t t Z 和 t t W 横截面