A precise calculation of delayed coincidence selection efficiency and accidental coincidence rate  

作　　者：余婧懿 王喆 陈少敏 

机构地区：[1]Department of Engineering Physics Tsinghua University

出　　处：《Chinese Physics C》2015年第5期80-85,共6页中国物理C（英文版）

基　　金：Supported by Ministry of Science and Technology of China(2013CB834302);National Natural Science Foundation of China(11235006,11475093);Tsinghua University Initiative Scientific Research Program(2012Z02161);Key Laboratory of Particle&Radiation Imaging(Tsinghua University),Ministry of Education

摘　　要：A precise background evaluation model is coincidence method, which is widely used in reactor proposed to address the complex data structure of the delayed electron-antineutrino oscillation experiments. In this model, effects from the muon veto, uncorrelated random background, and background are all studied analytically, simplifying the estimation of the systematic uncertainties of signal efficiency and accidental background rate. The results of the calculations are validated numerically with a number of simulation studies and also applied and validated in the recent Daya Bay hydrogen-capture based oscillation measurement.A precise background evaluation model is coincidence method, which is widely used in reactor proposed to address the complex data structure of the delayed electron-antineutrino oscillation experiments. In this model, effects from the muon veto, uncorrelated random background, and background are all studied analytically, simplifying the estimation of the systematic uncertainties of signal efficiency and accidental background rate. The results of the calculations are validated numerically with a number of simulation studies and also applied and validated in the recent Daya Bay hydrogen-capture based oscillation measurement.

关 键 词：delayed coincidence accidental coincidence inverse beta decay analytical model 

分 类 号：O572.321[理学—粒子物理与原子核物理]