Searches for Physics Beyond the Standard Model through the Running of the Strong Coupling Constant in the ATLAS Experiment at the LHC

通过在 LHC 的 ATLAS 实验中运行强耦合常数来寻找超出标准模型的物理

• 批准号: 2209492
• 负责人: Markus Wobisch
• 金额: $ 18.8万
• 依托单位: Louisiana Tech University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-08-15 至 2025-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2209492&HistoricalAwards=false
• 关键词: Searches; Physics; Beyond; Standard; Model

This award will provide support to a Louisiana Tech University group working on the ATLAS experiment at the Large Hadron Collider (LHC) at CERN, a particle physics laboratory in Geneva, Switzerland. The LHC machine and ATLAS, a large particle detector facility, were built as basic science tools using funds from NSF and other agencies around the world. One of their primary objectives was to find the Higgs Boson, the last particle in the historically successful "Standard Model" (SM) that accounts for so much of the existence of, and forces between, known particles forming the matter in the universe. This effort has been successful. The next step in the experiments is to look for evidence for physics Beyond the Standard Model (BSM) that might, for instance, account for the presence of the mysterious "Dark Matter" that makes up so much of the mass of the universe. The LHC is currently starting Run 3, at higher energy and with significantly increased event samples. It is possible that evidence for BSM physics could emerge at this higher energy and with the higher event statistics. Analytically, Louisiana Tech is one of the leading institutions in the US pursuing precision Quantum Chromodynamics (QCD) measurements. In particular, the group applies novel approaches, Including using Machine Learning techniques, to precision measurements of multi-jet final states. Such studies are significant because the multi-jet ratios that the group measures provide a relatively precise measurement of the strong coupling constant, an important physical quantity, in a manner that ameliorates systematic effects. In addition, any deviations observed in such multi-jet parameters with respect to QCD predictions can provide a window to new physics. In support of their work and other researchers in the field, the Louisiana Tech group has created fast software programs that allow researchers to make fast perturbative QCD predictions of observables in hadronic processes. In the broader context, the LHC provides an excellent platform for providing outreach and communication about basic science to K-12 students and the general public and serves as a recruiting tool for physics majors to Louisiana Tech from the north Louisiana area. As part of this effort, the Louisiana Tech group will partner with local high schools to provide International Masterclasses for physics students that will give them an opportunity to visit the university and its facilities and allow them to perform real analyses using LHC data. This project is jointly funded by the NSF Physics Division Elementary Particle Physics Program and the Established Program to Stimulate Competitive Research (EPSCoR).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.

该奖项将为位于瑞士日内瓦的粒子物理实验室CERN的大型强子撞机（LHC）的路易斯安那理工大学小组提供支持。 LHC机器和Atlas是一个大型粒子探测器设施，是使用NSF和世界其他机构的基金的基础科学工具建造的。他们的主要目标之一是找到Higgs Boson，这是历史上成功的“标准模型”（SM）中的最后一个粒子，该粒子构成了已知粒子在宇宙中形成物质的已知粒子之间的大部分和力。这项工作已经成功。实验的下一步是寻找超越标准模型（BSM）的物理学的证据，例如，这可能解释了构成宇宙质量大部分的神秘“暗物质”的存在。 LHC目前正在以较高的能量开始运行3，并且事件样本显着增加。 BSM物理学的证据可能会出现在这种较高的能量和较高的事件统计数据下。从分析上，路易斯安那理工学院是美国追求精确量子染色体动力学（QCD）测量的领先机构之一。特别是，该小组采用新颖的方法（包括使用机器学习技术）来精确测量多重子最终状态。这样的研究很重要，因为该组测量的多喷射比以减轻系统效应的方式提供了对强耦合常数（重要的物理量）的相对精确测量。此外，相对于QCD预测，在此类多喷射参数中观察到的任何偏差都可以为新物理学提供一个窗口。为了支持他们的工作和该领域的其他研究人员，路易斯安那州科技集团创建了快速的软件程序，使研究人员能够对HADRONIC过程中可观察到的可观察结果进行快速扰动的QCD预测。在更广泛的背景下，LHC为K-12学生和公众提供了有关基础科学的外展和沟通的绝佳平台，并作为北路易斯安那州路易斯安那理工学院物理专业的招聘工具。作为这项工作的一部分，路易斯安那州科技集团将与当地高中合作，为物理学生提供国际大师班，这将使他们有机会访问大学及其设施，并允许他们使用LHC数据进行真实的分析。该项目由NSF物理部基础粒子物理计划和启发竞争研究的既定计划共同资助。该奖项反映了NSF的法定任务，并认为使用基金会的智力优点和更广泛影响的审查标准，认为值得通过评估来获得支持。