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科学问题，纽约州立大学石溪分校集团通过该奖项的支持，通过大型强子对撞机（LHC）的最高可用碰撞能量进行实验来研究这些问题。瑞士日内瓦欧洲核子研究中心的这些研究与对大爆炸后转瞬即逝的宇宙的最基本理解有关，也与我们现在看到的宇宙有关。现在在人造加速器有史以来达到的最高碰撞能量（13 万亿电子伏或 13 TeV）下运行，该实验计划的目标是了解 2012 年在那里发现的希格斯玻色子的本​​质，并寻找超越该粒子的新物理石溪小组的研究旨在通过 ATLAS 实验收集的数据来解决这些科学目标，ATLAS 实验是大型强子对撞机的主要多功能探测器之一。诸如此类的问题：新发现的希格斯粒子是粒子物理学标准模型预测的粒子，还是包含新粒子的更大理论图景的一部分？为什么观测到的希格斯玻色子质量如此之低？ 1260 亿电子伏特，大约是质子质量的 135 倍？高能电弱相互作用的力载体 W 和 Z 玻色子的详细特性是什么？重要的是，石溪小组正在为 ATLAS 探测器的当前升级提供管理领导，以便在本世纪末做好准备。将使 ATLAS 能够以更高的光束碰撞率运行，从而显着提高实验计划的物理发现能力。通过技术人员的支持以及教育和培训，这项工作为美国许多大学团体提供了参与和贡献。年轻的科研人员开发和部署新的、最先进的仪器。

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.