Development of a High Resolution Detection System for the Precision Measurement of the Neutral Pion Lifetime at JLab

JLab 开发用于精确测量中性π介子寿命的高分辨率检测系统

• 批准号: 0079840
• 负责人: Oliver Baker
• 金额: $ 97.02万
• 依托单位: Hampton University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-08-01 至 2004-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0079840&HistoricalAwards=false
• 关键词: Development; Resolution; Detection; System; Precision

0079840GasparianThis award will support the construction and operation ofexperimental detection equipment to perform the most fundamentalprediction of quantum chromodynamics (QCD) at low energy. Since the quality of existing measurements is not commensurate with theprecision of the theoretical prediction, a modern measurement at the1.5% accuracy level would fill this important experimental gap, andwould test the prediction of the so-called axial anomaly at thelevel of the theoretical precision. The experiment will measure thedecay width of the neutron pi meson via coherent photoproduction inthe Coulomb field of the nucleus, i.e., the Primakoff effect. Theexperiment has been approved to run at Jefferson Laboratory withhigh priority. The project involves approximately 14 seniorresearchers from 12 institutions, seven postdoctoral fellows, andeight graduate students, and represents an excellent educationalopportunity.

0079840加斯帕里安该奖项将支持实验检测设备的建设和运行，以执行最基本的预测量子色动力学（QCD）在低能量。 由于现有测量的质量与理论预测的精度不相称，1.5%精度水平的现代测量将填补这一重要的实验空白，并将在理论精度水平上测试所谓轴向异常的预测。 该实验将通过核库仑场中的相干光生测量中子π介子的衰变宽度，普里马科夫效应 该实验已被批准在杰斐逊实验室运行的高优先级。 该项目涉及来自12个机构的大约14名高级研究人员，7名博士后研究员和8名研究生，代表了一个极好的教育机会。