Determination of event start time at BESⅢ

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MA Xiang. Determination of event start time at BESⅢ[J]. Chinese Physics C, 2008, 32(9): 744-749. doi: 10.1088/1674-1137/32/9/012
MA Xiang. Determination of event start time at BESⅢ[J]. Chinese Physics C, 2008, 32(9): 744-749.  doi: 10.1088/1674-1137/32/9/012 shu
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Received: 2007-11-19
Revised: 2007-12-11
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Determination of event start time at BESⅢ

    Corresponding author: MA Xiang,
  • Institute of High Energy Physics, CAS, Beijing 100049, China2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China3 CCASTWorld Laboratory, Beijing 100080, China4 Tsinghua University, Beijing 100084, China5 Nanjing University, Nanjing 210093, China6 Zhengzhou University, Zhengzhou 450001, China7 Peking University, Beijing 100871, China8 Liaoning University, Shenyang 110036, China9 Guangxi Normal University, Guilin 541004, China10 Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China11 Shandong University, Jinan 250100, China

Abstract: 

The principle of the method for the BESⅢ event start time determination and the code construction are described. The investigation of influence of the noise, the method of rejecting noise and the performance checking by the Monte Carlo physics data sample are also presented. The preliminary results got from the Monte Carlo simulation are presented, the reconstruction efficiency of J/ψ→ anything events at noise level 0~60% can achieve above 99%, and the error rate is below 1%.

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