Study of the efficiency of event start time determination at BESⅢ

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GUAN Ying-Hui, ZHENG Yang-Heng, WANG Yi-Fang and Study of the efficiency of event start time determination at BESⅢ[J]. Chinese Physics C, 2014, 38(1): 016201. doi: 10.1088/1674-1137/38/1/016201
GUAN Ying-Hui, ZHENG Yang-Heng, WANG Yi-Fang and Study of the efficiency of event start time determination at BESⅢ[J]. Chinese Physics C, 2014, 38(1): 016201.  doi: 10.1088/1674-1137/38/1/016201 shu
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Received: 2013-03-15
Revised: 2013-04-02
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Study of the efficiency of event start time determination at BESⅢ

    Corresponding author: ZHENG Yang-Heng,

Abstract: 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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