RUI: Refined Tests of Fundamental Symmetries

RUI：基本对称性的精细测试

• 批准号: 9987863
• 负责人: Larry Hunter
• 金额: $ 41.71万
• 依托单位: Amherst College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-07-15 至 2004-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9987863&HistoricalAwards=false
• 关键词: RUI; Refined; Tests; Fundamental; Symmetries

This RUI project focuses on precision measurements of fundamental symmetries. Three different measurements are to be undertaken: 1) the current Amherst edm measurement in Cs will be continued, with technical innovations to the experiment that should result in a value that is improved by a factor of 20 over the current Cs limit; 2) measurements of the hyperfine splittings, isotope shifts, and g-factors for the a(1) state of PbO will be undertaken to provide essential support for the new edm measurement that is being initiated at Yale University; and 3) the search for a violation of local Lorentz invariance (LLI) and CPT, for which the existing Amherst value provides the best laboratory limits, will be renewed. This renewed undertaking is prompted by recent theoretical results that provide a coherent theory that allows for both LLI and CPT nonconservation.

该 RUI 项目专注于基本对称性的精确测量。 将进行三种不同的测量： 1) 将继续当前的 Amherst edm 测量 Cs，并对实验进行技术创新，所得值将比当前 Cs 限值提高 20 倍； 2) 将测量 PbO 的 a(1) 态的超精细分裂、同位素位移和 g 因子，为耶鲁大学正在启动的新 edm 测量提供必要的支持； 3) 将重新寻找违反局部洛伦兹不变性 (LLI) 和 CPT 的情况，现有阿默斯特值为此提供了最佳实验室限制。 这项新的尝试是由最近的理论结果推动的，这些结果提供了一个连贯的理论，允许 LLI 和 CPT 不守恒。