Low Energy Nuclear Physics Using The Princeton Cyclotron, Lasers, and Ultra Cold Neutrons

使用普林斯顿回旋加速器、激光器和超冷中子的低能核物理

• 批准号: 9807133
• 负责人: Gordon Cates
• 金额: $ 70万
• 依托单位: Princeton University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-08-15 至 2001-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9807133&HistoricalAwards=false
• 关键词: Low; Energy; Nuclear; Physics; Using

***9807133CatesNeutron beta-decay provides fundamental data on the charged weak current form factors of the nucleon. The goal of this project is to make use of ultracold neutrons (UCN's) to ultimately provide at least and order of magnitude improvement in the precision to which the beta-asymmetry is known. Such a measurement, when coupled with the ongoing effort to improve measurements of the neutron lifetime (also through the use of UCN's), provides improved values for the weak axial form factor and the up-down CKM matrix element, as well as providing a sensitive test for extensions to the standard model. The experiment will take place at Los Alamos National Laboratory, but will make extensive use of the resources available at Princeton for detector development, data acquisition, and data analysis.***

***9807133Cates中子β衰变提供有关核子带电弱电流形状因子的基本数据。 该项目的目标是利用超冷中子 (UCN) 最终将已知的 β 不对称性的精度至少提高一个数量级。 这样的测量，当与改进中子寿命测量的持续努力（也通过使用UCN）相结合时，为弱轴形状因子和上下CKM矩阵元素提供了改进的值，并为标准模型的扩展提供了灵敏的测试。 该实验将在洛斯阿拉莫斯国家实验室进行，但将广泛利用普林斯顿大学的可用资源进行探测器开发、数据采集和数据分析。***