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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学的各个方面：欧洲核子研究中心大型强子对撞机的ATLAS实验;加拿大SNOLAB的SNO+中微子实验;瑞士苏黎世PSI的nEDM实验; NOvA实验和美国芝加哥FNAL的其他未来长基线中微子项目。所有这些实验都探索了自然界的一些最基本的性质，试图为新的物理现象找到证据。苏塞克斯对ATLAS数据的分析做出了主要贡献，在质子-质子相互作用中寻找超对称性（SUSY）的证据，专注于寻找电弱SUSY粒子，称为电荷伴子和中性伴子，以及顶夸克的超对称标量伙伴。超对称性的发现不仅为新物理学的存在提供了证据，而且还可能通过揭示我们宇宙中难以捉摸的暗物质的性质，在粒子物理学和宇宙学之间建立联系。Sussex还对ATLAS触发系统（就像实验的“大脑”）做出了重要贡献-通过参与触发操作以及触发系统核心软件的开发和维护。该小组还参与了ATLAS触发系统未来升级的准备工作。苏塞克斯在中子电偶极矩（EDM）的持续研究中提供了大量的智力领导。找到EDM将代表超越SM的物理学的明确证据;相反，在我们所瞄准的灵敏度上，没有任何EDM将对新物理学的模型提供严重的限制。这项工作也提供了一个宇宙学的联系，因为任何中子EDM的大小是由相同的CP破坏机制决定的，这是宇宙中物质对反物质的主导地位。苏塞克斯在中微子物理学领域发挥着至关重要的作用，通过参与SNO+和NOvA实验，并通过参与美国未来的长基线中微子计划。在SNO+方面，苏塞克斯领导校准和低中子活动，并参与物理分析的准备工作，重点是关键的无中微子双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自己的反粒子这个长期存在的问题。该小组在分析NOvA数据方面发挥了重要作用，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了LBNE/LBNF。