Studies in Elementary Particle Physics

基本粒子物理研究

• 批准号: 2012584
• 负责人: Morris Swartz
• 金额: $ 211万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-06-01 至 2023-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2012584&HistoricalAwards=false
• 关键词: Studies; Elementary; Particle; Physics

One of the major intellectual achievements of the 20th century was the development of the Standard Model (SM) of particle physics. This model succeeded in classifying all the elementary particles known at the time into a hierarchy of groups having similar quantum properties. The validity of this model to date was confirmed by the discovery of the Higgs boson at the Large Hadron Collider (LHC). However, the Standard Model as it currently exists leaves open many questions about the universe, including such fundamental questions as to why the Higgs mass has the value it has. One of the primary functions of the Compact Muon Solenoid (CMS) experiment at the LHC, which remains the premier Energy Frontier particle accelerator, operating at the CERN laboratory near Geneva Switzerland, is to discover new physics beyond the Standard Model. This project will analyze the latest data from the CMS experiment looking for signals of beyond the Standard Model. The work that will be accomplished with this award will impact three broad areas: 1) furthering the analysis techniques that might well discover new physics at the LHC 2) Alignment of the new tracking detector upgrade of the CMS detector (HL-LHC) and 3) workforce development and outreach to the broader community.This group led the work on the 4-lepton decay channel in the discovery of the Higgs. This award will expand on analysis techniques developed in that discovery, applying it to the new data that has now been delivered by the LHC and use it in new searches for physics beyond the Standard Model. To discover this new physics, this group will probe the large data sample of Higgs bosons, measuring details such as precision measurements of the Higgs boson mass, width, quantum numbers, Charge Parity properties, and more generally, the tensor structure of Higgs interactions with vector bosons and fermions. The larger dataset now available could yield new sources of symmetry violation (called Charged Parity or CP violation) that might be associated with the Higgs boson. This project will also support technical contributions to the operation of the CMS detector and to the study of new detector technology for high luminosity upgrades of the LHC, the HL-LHC which has now just started. The contributions to the study of detector upgrades are based on tools that were developed to support the present operation. The PI's group is the host of a QuarkNet center that has a current membership of 25 Baltimore area high school teachers. The QuarkNet center has initiated and helped to organize a very successful series of regional Physics Fairs that have brought science to thousands of area residents.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

20世纪最重要的智力成就之一是粒子物理学标准模型（SM）的发展。这个模型成功地将当时已知的所有基本粒子划分为具有相似量子特性的等级。迄今为止，该模型的有效性已被大型强子对撞机（LHC）发现的希格斯玻色子所证实。然而，目前存在的标准模型留下了许多关于宇宙的问题，包括为什么希格斯质量具有它所具有的价值这样的基本问题。紧凑介子螺线管（CMS）实验在大型强子对撞机（LHC）的主要功能之一是发现超越标准模型的新物理。LHC仍然是首屈一指的能量前沿粒子加速器，在瑞士日内瓦附近的欧洲核子研究中心（CERN）实验室运行。该项目将分析CMS实验的最新数据，寻找超出标准模型的信号。这项工作将影响三个广泛的领域：1)进一步发展可能在大型强子对撞机上发现新物理的分析技术；2)调整CMS探测器（HL-LHC）的新跟踪探测器升级；3)劳动力发展和向更广泛的社区推广。这个小组在发现希格斯玻色子的过程中领导了4轻子衰变通道的研究。该奖项将扩展在该发现中开发的分析技术，将其应用于LHC现在提供的新数据，并将其用于对标准模型之外的物理的新搜索。为了发现这种新的物理学，这个小组将探测希格斯玻色子的大数据样本，测量细节，如希格斯玻色子质量、宽度、量子数、电荷奇偶性的精确测量，以及更一般地说，希格斯玻色子与矢量玻色子和费米子相互作用的张量结构。现在可用的更大的数据集可以产生可能与希格斯玻色子有关的对称违反的新来源（称为带电奇偶性或CP违反）。该项目还将支持CMS探测器的运行，以及为LHC （HL-LHC）的高亮度升级研究新的探测器技术，LHC目前刚刚启动。对探测器升级研究的贡献是基于为支持当前操作而开发的工具。PI的小组是QuarkNet中心的主人，该中心目前有25名巴尔的摩地区的高中教师。QuarkNet中心发起并帮助组织了一系列非常成功的区域物理博览会，将科学带给了成千上万的地区居民。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Searches for Heavy Resonances with Substructure

搜索与下部结构的重共振

• DOI: 10.1146/annurev-nucl-102419-055402
• 发表时间: 2022
• 期刊: Annual Review of Nuclear and Particle Science
• 影响因子: 12.4
• 作者: Maksimović, Petar

Constraining anomalous Higgs boson couplings to virtual photons

• DOI: 10.1103/physrevd.105.096027
• 发表时间: 2021-09
• 期刊: Physical Review D
• 影响因子: 5
• 作者: Jeffrey A. Davis;A. Gritsan;L. S. M. Guerra;S. Kyriacou;J. Roskes;M. Schulze

Search for a heavy resonance decaying to a top quark and a W boson at $$ \sqrt{s} $$ = 13 TeV in the fully hadronic final state

在完全强子最终状态下，在 $$ sqrt{s} $$ = 13 TeV 处搜索衰减为顶夸克和 W 玻色子的重共振

• DOI: 10.1007/jhep12(2021)106
• 发表时间: 2021
• 期刊: Journal of High Energy Physics
• 影响因子: 5.4
• 作者: Sirunyan, A. M.;Tumasyan, A.;Adam, W.;Bergauer, T.;Dragicevic, M.;Escalante Del Valle, A.;Frühwirth, R.;Jeitler, M.;Krammer, N.;Lechner, L.
• 通讯作者: Lechner, L.

Measurement of the Drell-Yan forward-backward asymmetry at high dilepton masses in proton-proton collisions at $$ \sqrt{s} $$ = 13 TeV

$$ sqrt{s} $$ = 13 TeV 质子-质子碰撞中高双轻子质量下 Drell-Yan 前后不对称性的测量

• DOI: 10.1007/jhep08(2022)063
• 发表时间: 2022
• 期刊: Journal of High Energy Physics
• 影响因子: 5.4
• 作者: Tumasyan, A.;Adam, W.;Andrejkovic, J. W.;Bergauer, T.;Chatterjee, S.;Damanakis, K.;Dragicevic, M.;Escalante Del Valle, A.;Frühwirth, R.;Jeitler, M.
• 通讯作者: Jeitler, M.

Search for a massive scalar resonance decaying to a light scalar and a Higgs boson in the four b quarks final state with boosted topology

• DOI: 10.1016/j.physletb.2022.137392
• 发表时间: 2022-04
• 期刊: Physics Letters B
• 影响因子: 4.4
• 作者: Cms Collaboration