Characterising the Higgs boson to search for new physics

表征希格斯玻色子以寻找新物理学

• 批准号: ST/N003985/1
• 负责人: Nicholas Wardle
• 金额: $ 60.16万
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FN003985%2F1
• 关键词: Characterising; Higgs; boson; search; new

The discovery of the Higgs boson by the ATLAS and CMS detectors was the greatest success of the first run of the Large Hadron Collider (LHC) at CERN and represented a huge step forward in the experimental verification of the Standard Model (SM) of particle physics. In proton-proton collisions, the Higgs boson is produced and subsequently decays via a number of different processes. The SM, our best description of the fundamental interaction of particles, accurately predicts the rate at which each of these processes occurs.Despite the remarkable success of the SM, we know it to be an incomplete picture. For example, it provides no explanation for the existence of dark matter. The LHC uniquely offers the opportunity to study Higgs production and decay and allow us to see how well nature agrees with the theoretical predictions. Any deviation from the predictions will be a clear sign of the existence of new physics and provide hints as to where physicists should be looking next. Moreover, if dark matter interacts with the Higgs boson, additional decays of the Higgs boson to dark matter particles will produce detectable signatures at the LHC, providing a link between the SM and dark matter. This research programme proposed is to probe potential new physics with the Higgs boson through a series of precision couplings and properties measurements building towards a full characterisation of the Higgs boson. These measurements are a major focus of the LHC, CERN and in general of the European strategy for particle physics. The measurements can be interpreted in a number of theoretical models proposed to extend the SM. The aim of this research is to connect precision Higgs measurements with physics beyond the SM in order to fully characterise the Higgs boson which will be a key consideration in the design of future experiments in the search for new physics.

由ATLAS和CMS探测器发现的希格斯玻色子是欧洲核子研究中心大型强子对撞机（LHC）首次运行的最大成功，代表着粒子物理学标准模型（SM）的实验验证向前迈出了一大步。在质子-质子碰撞中，希格斯玻色子产生，随后通过许多不同的过程衰变。SM是我们对粒子基本相互作用的最佳描述，它准确地预测了这些过程发生的速度。尽管SM取得了显著的成功，但我们知道它是一个不完整的图景。例如，它无法解释暗物质的存在。大型强子对撞机提供了独特的机会来研究希格斯粒子的产生和衰变，并让我们看到自然界与理论预测的一致程度。任何与预测的偏差都将是新物理学存在的明显迹象，并为物理学家下一步应该关注的方向提供线索。此外，如果暗物质与希格斯玻色子相互作用，那么希格斯玻色子对暗物质粒子的额外衰变将在大型强子对撞机上产生可探测的特征，从而提供SM和暗物质之间的联系。这项研究计划是通过一系列精确的耦合和性质测量来探索希格斯玻色子潜在的新物理学，以建立希格斯玻色子的完整特征。这些测量是大型强子对撞机、欧洲核子研究中心以及欧洲粒子物理总体战略的主要关注点。这些测量结果可以用一些理论模型来解释，这些模型是用来扩展SM的。这项研究的目的是将精确的希格斯测量与超越SM的物理联系起来，以便充分表征希格斯玻色子，这将是设计未来寻找新物理的实验时的关键考虑因素。

项目成果

Publishing statistical models: Getting the most out of particle physics experiments

• DOI: 10.21468/scipostphys.12.1.037
• 发表时间: 2021-09
• 期刊: SciPost Physics
• 影响因子: 5.5
• 作者: K. Cranmer;S. Kraml;H. Prosper;P. Bechtle;F. Bernlochner;I. Bloch;E. Canonero;M. Chrzaszcz

Reinterpretation of LHC Results for New Physics: Status and recommendations after Run 2

新物理学对大型强子对撞机结果的重新解释：第二轮运行后的状态和建议

• DOI: 10.21468/scipostphys.9.2.022
• 发表时间: 2020
• 期刊: SciPost Physics
• 影响因子: 5.5
• 作者: Abdallah W

Towards the next generation of simplified Dark Matter models

• DOI: 10.1016/j.dark.2017.02.002
• 发表时间: 2016-07
• 期刊: Physics of the Dark Universe
• 影响因子: 5.5
• 作者: A. Albert;M. Bauer;O. Buchmueller;J. Brooke;D. Cerdeño;M. Citron;G. Davies;A. Cosa;A. Roeck;A. Simone;T. Pree;J. Ellis;H. Flaecher;M. Fairbairn;A. Grohsjean;K. Hahn;U. Haisch;P. Harris;V. Khoze;G. Landsberg;C. McCabe;B. Penning;V. Sanz;C. Schwanenberger;P. Scott;N. Wardle

Reinterpretation of LHC Results for New Physics : Status and recommendations after Run 2

新物理学对大型强子对撞机结果的重新解释：第二轮运行后的状态和建议

• DOI: 10.18154/rwth-2020-10372
• 发表时间: 2020
• 作者: Abdallah W