Study of the efficiency of event start time determination at BESⅢ  

作　　者：管颖慧 吕晓睿 郑阳恒 王贻芳 

机构地区：[1]University of Chinese Academy of Sciences [2]Institute of High Energy Physics,Chinese Academy of Sciences

出　　处：《Chinese Physics C》2014年第1期61-64,共4页中国物理C（英文版）

基　　金：Supported by Ministry of Science and Technology of China(2009CB825200);Joint Funds of National Natural Science Foundation of China(11079008);Natural Science Foundation of China(11275266);SRF for ROCS of SEM

摘　　要：A method to estimate the efficiency of event start time determination at BESIII is developed. This method estimates the efficiency at the event level by combining the efficiencies of various tracks （e, μ, π, K, p, y） in a Bayesian way. Efficiencies results and the difference between data and MC at the track level are presented in this paper. For a given physics channel, event start time efficiency and systematic error can be estimated following this method.A method to estimate the efficiency of event start time determination at BESIII is developed. This method estimates the efficiency at the event level by combining the efficiencies of various tracks （e, μ, π, K, p, y） in a Bayesian way. Efficiencies results and the difference between data and MC at the track level are presented in this paper. For a given physics channel, event start time efficiency and systematic error can be estimated following this method.

关 键 词：event start time MDC BESⅢ 

分 类 号：TL817[核科学技术—核技术及应用]