| Study of the efficiency of event start time determination at BESⅢ |
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| 作者姓名： | 管颖慧 吕晓睿 郑阳恒 王贻芳 |
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| 作者单位： | 1 University of Chinese Academy of Sciences, Beijing 100049, China;;2 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China |
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| 基金项目： | 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 |
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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,γ)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.
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| 关 键 词： | event start time MDC BESⅢ |
| 收稿时间： | 2013-03-15 |
| 修稿时间： | 2013-04-02 |
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