Study of the efficiency of event start time determination at BESⅢ

Study of the efficiency of event start time determination at BESⅢ

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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.

作者管颖慧吕晓睿郑阳恒王贻芳

机构地区 University of Chinese Academy of Sciences Institute of High Energy Physics

出处《Chinese Physics C》 SCIE CAS CSCD 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

关键词 event start time MDC BESⅢ event start time, MDC, BESⅢ

分类号 TL817 [核科学技术—核技术及应用]

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Study of the efficiency of event start time determination at BESⅢ

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