Sussex Experimental Particle Physics 2015 Consolidated Grant

苏塞克斯实验粒子物理2015年综合补助金

基本信息

批准号：
ST/N000307/1
负责人：
Antonella De Santo
金额：
$ 312.31万
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：
2015
资助国家：
英国
起止时间：
2015 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=ST%2FN000307%2F1
关键词：
Sussex Experimental Particle Physics 2015

项目摘要

The Sussex Experimental Particle Physics group is involved in various strands of Particle Physics: the ATLAS experiment at CERN's Large Hadron Collider; the SNO+ neutrino experiment at SNOLAB in Canada; the nEDM experiment at PSI, Zurich, Switzerland; the NOvA experiment and other future long-baseline neutrino projects at FNAL, Chicago, USA. All of these experiments probe some of the most fundamental properties of Nature, seeking to find evidence for new physics phenomena. Sussex makes leading contributions to the analysis of ATLAS data, searching for evidence of supersymmetry (SUSY) in proton-proton interactions, focusing on the search for electroweak SUSY particles, known as charginos and neutralinos, and of the supersymmetric scalar partners of the top quark. The discovery of supersymmetry would not only provide evidence for the existence of new physics, but also potentially establish a link between particle physics and cosmology, by uncovering the nature of the elusive Dark Matter in our universe. Sussex also makes important contribution to the ATLAS trigger system (which acts like the experiment's "brain") -- through participation in trigger operations and in the development and maintenance of core software for the trigger system. The group is also involved in preparations for future upgrades of the ATLAS trigger system. Sussex provides substantial intellectual leadership in the ongoing search for an electric dipole moment (EDM) of the neutron. Finding an EDM would represent unambiguous evidence for physics beyond the SM; conversely, the absence of any EDM, at the sensitivity for which we are aiming, would provide severe constraints on models of new physics. This work also provides a link to cosmology, since the size of any neutron EDM is determined by the same CP-violating mechanism that underlies the dominance of matter over antimatter in the Universe. Sussex plays a crucial role in the field of neutrino physics, through participation in the SNO+ and NOvA experiments, and through involvement in the future programme of long-baseline neutrinos in the USA. On SNO+, Sussex leads calibration and the dataflow activities and is involved in preparations for physics analysis, with focus on the crucial neutrinoless double-beta decay analysis. This could both determine the mass of the neutrino and answer the long-standing question of whether the neutrino is its own antiparticle. The group has a major role in the analysis of NOvA data and is becoming involved in LBNE/LBNF via contributions to the data-acquisition software and liquid argon time-projection chamber prototypes.

苏塞克斯实验粒子物理小组参与了粒子物理的各个领域：CERN 大型强子对撞机的 ATLAS 实验；加拿大 SNOLAB 的 SNO+ 中微子实验；瑞士苏黎世 PSI 的 nEDM 实验；美国芝加哥 FNAL 的 NOvA 实验和其他未来的长基线中微子项目。所有这些实验都探讨了自然的一些最基本的特性，试图寻找新物理现象的证据。苏塞克斯对 ATLAS 数据的分析做出了主要贡献，寻找质子-质子相互作用中超对称性 (SUSY) 的证据，重点寻找电弱 SUSY 粒子（称为充子和中性子）以及顶夸克的超对称标量伴侣。超对称性的发现不仅将为新物理学的存在提供证据，而且还可能通过揭示宇宙中难以捉摸的暗物质的本质，在粒子物理学和宇宙学之间建立联系。苏塞克斯还通过参与触发操作以及触发系统核心软件的开发和维护，为 ATLAS 触发系统（就像实验的“大脑”）做出了重要贡献。该小组还参与了ATLAS触发系统未来升级的准备工作。苏塞克斯在持续寻找中子电偶极矩（EDM）方面发挥了重要的智力领导作用。找到 EDM 将代表超越 SM 的物理学的明确证据；相反，如果没有任何 EDM，在我们所追求的灵敏度下，将会对新物理模型产生严格的限制。这项工作还提供了与宇宙学的联系，因为任何中子 EDM 的大小都是由相同的 CP 破坏机制决定的，该机制是宇宙中物质相对反物质的主导地位。苏塞克斯通过参与 SNO+ 和 NOvA 实验以及参与美国未来的长基线中微子计划，在中微子物理领域发挥着至关重要的作用。在 SNO+ 上，苏塞克斯领导校准和数据流活动，并参与物理分析的准备工作，重点是关键的中微子双 β 衰变分析。这既可以确定中微子的质量，也可以回答中微子是否是其自身反粒子这一长期存在的问题。该小组在 NOvA 数据分析中发挥着重要作用，并通过对数据采集软件和液氩时间投影室原型的贡献，参与 LBNE/LBNF。