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，μ子实验计划。这些测量是瑞士保罗谢勒研究所（PSI）的MuSun实验和芝加哥附近费米国家加速器设施（FNAL）的新g-2实验。这两个实验都利用创新的方法来解决从标准模型的测试到弱核相互作用的性质等问题。 PSI的MuSun实验将测量μ子氘原子的寿命，精度约为百万分之十。该测量将确定μ介子氘双态捕获率，达到1.5%的无与伦比的精度。 FNAL的新g-2实验将测量μ子的异常磁矩，精度约为0.14 ppm。该测量解决了BNL E821结果与标准模型计算的μ子异常之间的诱人差异，并提供了新粒子和未检测到的力的探测，独特地补充了大型强子对撞机的物理范围。该项目涉及影响更广泛、意义更广泛的几个领域。PI将继续参与高中生，物理专业学生和物理研究生的研究活动。该小组参与高速数据采集和大容量数据分析将使我们的学生接触到尖端计算机硬件/软件的许多方面。对包括基本参数和基本相互作用在内的教科书量的测量将在核物理、粒子物理和天体物理中产生广泛的影响。