The phenomenology of the standard model and the search for new physics

标准模型的现象学和新物理学的探索

• 批准号: 121209-2009
• 负责人: Godfrey, Stephen
• 金额: $ 5.46万
• 依托单位: Carleton University
• 依托单位国家: 加拿大
• 项目类别: Subatomic Physics Envelope - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=522108
• 关键词: phenomenology; standard; model; search; new

The coming years will almost certainly revolutionize our understanding of the fundamental interactions. The Large Hadron Collider (LHC) at the CERN Laboratory near Geneva Switzerland is opening up a new high energy frontier as the highest energy particle accelerator ever built. The current theory of the elementary particles and their interactions is referred to as the Standard Model. Although it explains all known phenomena involving elementary particles it leaves several fundamental questions unanswered: What is the mechanism which gives particles mass (technically known as electroweak symmetry breaking (EWSB)), why is there so much more matter in the universe than antimatter, and what is the dark matter in the universe? The purpose of the LHC is to answer these questions and to search for physics beyond the standard model. Canada has made a significant investment in this project with well over 100 experimental physicists in Canada contributing to the LHC research program. Theoretical support for the Canadian experimental LHC program is important to maximize the scientific return on this investment. In my research I study theories of physics "Beyond the Standard Model" and predict the experimental signatures that will indicate that new physics has been discovered and devise experimental strategies for the physicists performing the experiments. I am building up expertise and developing tools for doing LHC calculations so that if something unusual is observed I can apply these techniques to analyse the experimental results and suggest further measurements to identify the underlying theory. Some of my research uses these approaches to distinguish between the different theories proposed to give particles mass. Other projects focus on developing strategies to to search for and identify exotic particles predicted by new theories. My research provides the theoretical input that is necessary to fully exploit the physics potential of the LHC.

接下来的几年几乎可以肯定会彻底改变我们对基本互动的理解。 瑞士日内瓦附近的CERN实验室的大型强子对撞机（LHC）正在为有史以来最高的能量粒子加速器开放一个新的高能边界。 当前的基本粒子及其相互作用的理论称为标准模型。 尽管它解释了所有涉及基本颗粒的现象，但它留下了几个基本问​​题：什么是给出颗粒质量的机制（技术上称为electroweak对称性破坏（EWSB）），为什么宇宙中宇宙中比反物质有更多的物质，宇宙中有什么暗物质？ LHC的目的是回答这些问题，并在标准模型之外寻找物理。 加拿大对该项目进行了巨大的投资，加拿大的100多名实验物理学家为LHC研究计划做出了贡献。 对加拿大实验性LHC计划的理论支持对于最大化这项投资的科学回报很重要。在我的研究中，我研究了物理学理论“超越标准模型”，并预测了将发现新物理学的实验签名，并为执行实验的物理学家设计了实验策略。 我正在建立专业知识和开发进行LHC计算的工具，以便如果观察到异常情况，我可以应用这些技术来分析实验结果，并提出进一步的测量以识别基本理论。我的一些研究使用这些方法来区分提出颗粒质量的不同理论。 其他项目着重于制定策略，以搜索和识别新理论预测的异国情调颗粒。我的研究提供了充分利用LHC物理潜力所必需的理论输入。