Experimental Studies Into The Nature of The Higgs Mechanism and Searches for New Physics with the ATLAS Experiment

通过ATLAS实验探究希格斯机制的本质并寻找新物理

• 批准号: 2111511
• 负责人: Kathryn Grimm
• 金额: $ 50万
• 依托单位: California State University, East Bay Foundation, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2111511&HistoricalAwards=false
• 关键词: Experimental; Studies; Into; Nature; Higgs

This award will provide support to a single PI 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 in the midst of analyzing data from Run 2, at almost twice the energy explored earlier 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. Search for evidence of such physics is the goal of this project along with preparation for the next data taking period starting in late 2021.The California State University East Bay high energy physics group will use data collected by the ATLAS experiment to probe the mechanism by which fundamental particles acquire mass through electroweak symmetry breaking (EWSB) and to search for evidence of new physics. The group will search for pairs of Higgs bosons and other exotic particles decaying to pairs of b-quarks and pairs of tau leptons. Study of such rare events has become more viable as the center-of-mass energy of the LHC is increased to 13 TeV and the luminosity of the accelerator facility is steadily increased. In parallel, upgrades of the ATLAS detector are underway which will allow for further improvements in data recording. The Cal State East Bay group will focus on reconstruction of particle tracks and their association with primary collision vertices, important for the identification and measurement of the b-quarks and tau leptons in complex particle interactions. Collaboration is planned with the ATLAS group at the SLAC National Accelerator Laboratory to work on the upgrade of the ATLAS tracking detector. This will include studies of radiation damage to pixel detectors used close to the intense beam line at the LHCThis research program will bring the excitement and study of high energy physics to Cal State East Bay, which is recognized as a university with one of the most diverse undergraduate student enrollments in the country. Students in the group will participate in collaborative science, data analysis, and in instrumentation testing at the group's campus laboratories and at SLAC and CERN.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.

该奖项将为一个在瑞士日内瓦的粒子物理实验室Cern的ATLAS实验的单个PI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目前正在分析Run 2的数据，几乎是较早探索的能量的两倍，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。搜索这种物理学的证据是该项目的目标，以及为从2021年底开始开始的下一个数据摄取期的准备。加利福尼亚州立大学东湾高能物理小组将使用Atlas实验收集的数据来探测基本粒子通过电动eakeakemetry Symoremetry Breaking（EWSB）获取质量的机制，以寻找新物理学的证据。该小组将搜索成对的希格斯玻色子和其他外来的颗粒，这些颗粒腐烂到成对的b夸克和成对的tau瘦素。由于LHC的质量能量增加到13 TEV，并且加速器设施的发光度稳步增加，因此对此类罕见事件的研究变得更加可行。同时，正在进行ATLAS检测器的升级，这将允许进一​​步改进数据记录。 Cal State East Bay组将重点介绍粒子轨道的重建及其与主要碰撞顶点的关联，对于复杂粒子相互作用中B Quarks和Tau Leptons的识别和测量很重要。计划与SLAC国家加速器实验室的Atlas Group合作，以研究Atlas跟踪探测器的升级。这将包括对LHCTHIS研究计划紧密梁线接近的像素探测器的辐射损伤的研究，这将使对高能量物理学的兴奋和研究向Cal State East Bay进行，该大学被认为是该国拥有最多样化的本科生招生的大学之一。该小组的学生将参加该小组校园实验室和SLAC和CERN的协作科学，数据分析以及仪器测试。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子优点和更广泛影响的评估标准来通过评估来进行评估的。