Experimental Studies of the Higgs Mechanism in the Standard Model and Beyond

标准模型及其他模型中希格斯机制的实验研究

• 批准号: 1707558
• 负责人: John Hobbs
• 金额: $ 135万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-07-01 至 2021-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1707558&HistoricalAwards=false
• 关键词: Experimental; Studies; Higgs; Mechanism; Standard

Particle physics considers a vast range of scientific questions, from subatomic to cosmic scales. The State University of New York at Stony Brook Group supported through this award investigates such questions through experimentation at the highest available collision energies at the Large Hadron Collider (the LHC) at CERN, Geneva, Switzerland. These studies are relevant to the understanding of the Universe at its most fundamental level in the fleeting fraction of a second just after the Big Bang, and to why we see the Universe as we do now. The LHC is now operating at the highest collision energy ever achieved with man-made accelerators, 13 trillion electron volts or 13 TeV, and goals of the experimental program are to understand the nature of the Higgs Boson, discovered there in 2012, and to search for new physics beyond the Standard Model of Elementary Particle Physics. The research of the Stony Brook group is aimed to address these scientific goals from data collected with the ATLAS experiment, one of the major multipurpose detectors at the LHC. They seek answers to such questions as: is the newly discovered Higgs particle the one predicted by the Standard Model of particle physics or is it a part of a larger theoretical picture that includes new particles? Why is the observed mass of the Higgs boson so low, found to be 126 billion electron volts, or roughly 135 times the mass of the proton? What are the detailed properties of the force carriers of the electroweak interaction, the W and Z bosons, at high energy? These questions are critical to our understanding of the full context of the Standard Model of particle physics and to new physics that lies beyond the Standard Model.  Importantly, the Stony Brook group is providing managerial leadership for current upgrades of the ATLAS detector, to be ready by the end of the decade. These upgrades will allow the operation of ATLAS at ever higher beam collision rates to significantly increase the physics discovery capabilities of the experimental program. This effort provides for the participation and contribution of many university groups in the US, through support of technical personnel and education and training of young scientific researchers in the development and deployment of new, state-of-the-art instrumentation.

粒子物理学考虑了从亚原子到宇宙尺度的广泛的科学问题。斯托尼布鲁克集团的纽约州立大学通过该奖项的支持，通过在瑞士日内瓦欧洲核子研究中心的大型强子对撞机（LHC）上进行最高碰撞能量的实验来研究这些问题。这些研究关系到在大爆炸后短短一秒钟内对宇宙最基本的理解，以及为什么我们现在看到的宇宙。 大型强子对撞机现在正在以人造加速器实现的最高碰撞能量运行，13万亿电子伏或13 TeV，实验计划的目标是了解2012年发现的希格斯玻色子的性质，并寻找超越基本粒子物理学标准模型的新物理学。斯托尼布鲁克小组的研究旨在从ATLAS实验收集的数据中解决这些科学目标，ATLAS实验是LHC的主要多用途探测器之一。他们寻求这样一些问题的答案：新发现的希格斯粒子是粒子物理学标准模型预测的粒子，还是包括新粒子在内的更大理论图景的一部分？为什么观测到的希格斯玻色子的质量如此之低，只有1260亿电子伏特，大约是质子质量的135倍？ 电弱相互作用的力载体，W玻色子和Z玻色子在高能时的详细性质是什么？这些问题对于我们理解粒子物理学标准模型的完整背景和超越标准模型的新物理学至关重要。重要的是，斯托尼布鲁克小组正在为ATLAS探测器的当前升级提供管理领导，该探测器将在本十年结束前准备就绪。 这些升级将允许ATLAS以更高的光束碰撞率运行，以显着提高实验计划的物理发现能力。 这项工作通过支持技术人员和教育及培训年轻科研人员开发和部署新的最先进仪器，使美国许多大学团体参与并作出贡献。

项目成果

Search for Higgs boson decays into a pair of light bosons in the bbμμ final state in pp collision at s=13TeV with the ATLAS detector

使用 ATLAS 探测器在 s=13TeV 的 pp 碰撞中寻找希格斯玻色子衰变为 bbμμ 最终态的一对轻玻色子

• DOI: 10.1016/j.physletb.2018.10.073
• 发表时间: 2019
• 期刊: Physics Letters B
• 影响因子: 4.4
• 作者: Aaboud, M.;Aad, G.;Abbott, B.;Abdinov, O.;Abeloos, B.;Abhayasinghe, D.K.;Abidi, S.H.;AbouZeid, O.S.;Abraham, N.L.;Abramowicz, H.
• 通讯作者: Abramowicz, H.

A search for the dimuon decay of the Standard Model Higgs boson with the ATLAS detector

• DOI: 10.1016/j.physletb.2020.135980
• 发表时间: 2021-01-10
• 期刊: PHYSICS LETTERS B
• 影响因子: 4.4
• 作者: Aaboud, M.;Aad, G.;Zwalinski, L.
• 通讯作者: Zwalinski, L.