Low Energy, High Precision Muon Experiments

低能量、高精度μ介子实验

• 批准号: 1205792
• 负责人: Tim Gorringe
• 金额: $ 51万
• 依托单位: University of Kentucky Research Foundation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-05-15 至 2016-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1205792&HistoricalAwards=false
• 关键词: Low; Energy; Precision; Muon; Experiments

This project is a continuing program of low energy, high precision, muon experiments. The measurements are the MuSun experiment at Paul Scherrer Institute (PSI) in Switzerland and the new g-2 experiment at Fermi National Accelerator Facility (FNAL) near Chicago. Both experiments utilize innovative methods to address questions ranging from the testing of the Standard Model to the nature of the weak nuclear interaction. The MuSun experiment at PSI will measure the lifetime of the muonic deuterium atom to a precision of about 10 parts-per-million. The measurement will determine the muonic deuterium doublet capture rate to unrivaled accuracy of 1.5%. The New g-2 experiment at FNAL will measure the muon's anomalous magnetic moment to a precision of about 0.14 ppm. The measurement addresses the tantalizing discrepancy between the BNL E821 result and the Standard Model calculation of the muon anomaly and offers a probe of new particles and undetected forces that uniquely complements the physics reach of the Large Hadron Collider. The project involves several areas of broader impact and broader significance. The PI will continue his involvement of high school students, physics majors and physics graduate students in research activities. The group's involvement in high-speed data acquisition and high-volume data analysis will expose our students to many aspects of cutting-edge computer hardware/software. The proposed measurements of textbook quantities including fundamental parameters and basic interactions will have wide-range impact in nuclear, particle and astrophysics.

该项目是一个持续的低能量，高精度，MUON实验的计划。测量值是瑞士的保罗·舍雷学院（PSI）的Musun实验，以及芝加哥附近Fermi National Accelerator设施（FNAL）的新G-2实验。这两个实验均利用创新方法来解决从标准模型的测试到弱核相互作用的性质的问题。 PSI的Musun实验将测量Muonic氘原子的寿命至每百万分之十的精度。该测量将确定Muonic Deuterium Doublet捕获率至无与伦比的精度为1.5％。 FNAL的新G-2实验将测量MUON的异常磁矩的精度约为0.14 ppm。该测量方法解决了BNL E821结果与MUON异常的标准模型计算之间的诱人差异，并提供了新颗粒和未发现力的探针，这些粒子和未发现的力唯一地补充了大型HADRON撞机的物理学。该项目涉及几个具有更广泛影响和更广泛意义的领域。 PI将继续他参与高中生，物理专业和物理研究生研究活动。该小组参与高速数据采集和大量数据分析将使我们的学生了解尖端的计算机硬件/软件的许多方面。提出的对教科书数量的测量包括基本参数和基本相互作用将对核，粒子和天体物理学产生广泛的影响。