Experiments on the Electric Dipole Moment and Parity Non- Conserving Spin Rotations of the Neutron (Physics)

中子电偶极矩和宇称非守恒自旋旋转实验（物理）

• 批准号: 8711762
• 负责人: Blayne Heckel
• 金额: $ 12.69万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-07-01 至 1989-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8711762&HistoricalAwards=false
• 关键词: Experiments; Electric; Dipole; Moment; Parity

The proposed research is aimed at reducing, by a factor of ten, the current uncertainty in the neutron electric dipole moment. This fundamentally important measurement will provide a test for time reversal symmetry violation, and should help differentiate among theories of CP violation. Parity non-conservation and time reversal symmetry violation will also be studied through measurements of neutron spin rotation in scattering from polarized targets. In addition, the neutron-proton weak interaction coupling strength will be determined through measurements of the scattering of spin- polarized neutrons on liquid para-hydrogen. These experiments will be carried out using neutrons from the ILL reactor at Grenoble, and are a continuation of work funded under previous NSF grants.

拟议的研究旨在将中子电偶极矩的当前不确定性降低十倍。 这一极其重要的测量将为时间反演对称性破坏提供测试，并有助于区分 CP 破坏理论。 宇称不守恒和时间反演对称性破坏也将通过测量偏振目标散射中的中子自旋旋转来研究。 此外，中子-质子弱相互作用耦合强度将通过测量自旋极化中子在液态仲氢上的散射来确定。 这些实验将使用来自格勒诺布尔 ILL 反应堆的中子进行，并且是先前 NSF 拨款资助的工作的延续。