Studies of fundamental constants, interactions and symmetries via low-energy, high-precision muon experiments

通过低能量、高精度μ介子实验研究基本常数、相互作用和对称性

• 批准号: 0855319
• 负责人: Tim Gorringe
• 金额: $ 58.8万
• 依托单位: University of Kentucky Research Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-15 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0855319&HistoricalAwards=false
• 关键词: Studies; fundamental; constants; interactions; symmetries

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).This project is focused on investigations of the fundamental constants, elementary interactions and basic symmetries of the Standard Model. The proposed research is based on precision experiments with low-energy muon beams and includes continuing work on the MuLan/MuCap experiments at Paul Scherrer Institute, new work on the MuSun experiment at Paul Scherrer Institute, and R&D work for a new measurement of the muon anomalous magnetic moment at Fermilab. MuLan will determine to part-per-million precision the Fermi Constant of weak interactions, thus permitting more accurate weak interaction calculations and improved Standard Model tests. MuCap will determine the so-called induced pseudoscalar coupling constant of the proton's weak force, thereby testing the nature of spontaneously symmetry breaking in strong interactions. The MuSun experiment will study the elementary weak nuclear interaction between muons and deuterons, thereby furthering our understanding of thermonuclear fusion in the sun. Finally, a new measurement of the muon's anomalous magnetic moment will render an important test of physics beyond the Standard Model. The research includes several areas of broader impact. The PI will continue his involvement of high school students, physics majors and physics graduate students in research activities. Additionally, the PI will continue his efforts in undergraduate recruiting, graduate recruiting and community outreach. Our activities in high-speed data acquisition and high-volume data analysis will expose our students to many aspects of modern computing. Finally, our studies of fundamental constants, interactions and symmetries will have broad impact in nuclear, particle and astrophysics.

该奖项是根据2009年的《美国回收与再投资法》（公法111-5）资助的。本项目的重点是对标准模型的基本常数，基础互动和基本对称性进行调查。 拟议的研究基于对低能量的muon束的精确实验，包括在保罗·施雷尔研究所（Paul Scherrer Institute）进行的木兰/粘液胶体实验，Paul Scherrer Institute的新作品《 Musun实验的新工作》以及研发工作，用于在Fermilab的Muon Anomalos Anomoal Maginate Mister进行新的测量。 木兰将确定弱相互作用的费米常数，从而允许更准确的弱相互作用计算和改进的标准模型测试。 MUCAP将确定质子弱力的所谓诱导的伪镜耦合常数，从而测试在强相互作用中自发对称性破裂的性质。 Musun实验将研究Muons和Deuteron之间的基本弱核相互作用，从而进一步了解我们对太阳热核融合的理解。 最后，对MUON异常磁矩的新测量将为标准模型以外的物理学进行重要测试。 该研究包括更广泛影响的几个领域。 PI将继续他参与高中生，物理专业和物理研究生研究活动。 此外，PI将继续他在本科招募，研究生招聘和社区宣传方面的努力。 我们在高速数据获取和大量数据分析中的活动将使我们的学生了解现代计算的许多方面。 最后，我们对基本常数，相互作用和对称性的研究将对核，粒子和天体物理学产生广泛的影响。