RUI: Refined Tests of Fundamental Symmetries

这个RUI项目的重点是基本对称性的精确测量。 将进行三种不同的测量：1）将继续进行目前的以Cs为单位的Amherst电火花加工测量，对实验进行技术创新，其结果应是比目前的Cs限值提高20倍; 2）超精细分裂、同位素位移、a（1）态PbO的g因子将被用来为耶鲁大学正在启动的新的EDM测量提供必要的支持;和3）对局部洛伦兹不变性（LLI）和CPT的违反的搜索，现有的阿默斯特值提供了最佳的实验室限制，将被重新启动。 这一新的事业是由最近的理论结果，提供了一个连贯的理论，允许LLI和CPT不守恒提示。

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.