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组参与了粒子物理的各种链：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； Nova实验和美国芝加哥FNAL的其他未来长基线中微子项目。所有这些实验都探究了自然界中一些最基本的特性，试图找到新物理现象的证据。 Sussex对Atlas数据的分析做出了主要贡献，在Proton-Proton相互作用中寻找超对称性（SUSY）的证据，重点是寻找Electroweak Susy颗粒（称为Charginos和Nutralinos），以及顶级夸克的超对称标量伴侣。超对称性的发现不仅可以为存在新物理学的存在提供证据，而且还可以通过发现我们宇宙中难以捉摸的暗物质的性质，从而有可能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为触发系统的核心软件开发和维护，对Atlas触发系统（与实验的“大脑”一样）做出了重要贡献。该小组还参与了准备将来升级Atlas触发系统的准备工作。苏塞克斯在不断寻找中子的电动偶极时刻（EDM）时提供了实质性的智力领导。找到EDM将代表SM之外的物理学的明确证据。相反，在我们目标的灵敏度上，没有任何EDM将对新物理学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侵入机制决定的，该机制是物质在宇宙中反物质的主导地位。苏塞克斯通过参与SNO+和NOVA实验以及通过参与美国的Long-Baseline Neutminos的未来计划，在中微子物理学领域起着至关重要的作用。在SNO+上，苏塞克斯领导校准和数据流活动，并参与了物理分析的准备，重点是至关重要的中微子双β衰减分析。这既可以决定中微子的质量，又回答了中微子是否是其自身的反粒子的长期问题。该小组在NOVA数据的分析中起着重要作用，并通过对数据收购软件和液体氩时间预测室原型的贡献来参与LBNE/LBNF。