Primary vertex reconstruction based on the Kalman filter technique at BESIII

Min Xu, Kang Lin He, Zi Ping Zhang, Yi Fang Wang, Jian Ming Bian, Cheng Dong Fu, Bin Huang, Xiao Bin Ji, Sheng Sen Sun, Liang Yan, Jian Yong Zhang

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Abstract

Primary vertex reconstruction is crucial to estimate the beam profile in collision experiments. We study the principle of an iterative process, called the Kalman filter method, and apply it to primary vertex reconstruction at BESIII. A Newton procedure to find the zero point of the distance function's gradient is used for primary vertex finding in 3-dimensional space. Results are obtained based on raw data at BESIII.

Original languageEnglish (US)
Pages (from-to)92-98
Number of pages7
JournalChinese Physics C
Volume34
Issue number1
DOIs
StatePublished - Feb 23 2010

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Keywords

  • BES III
  • Kalman method
  • Primary vertex

Cite this

Xu, M., He, K. L., Zhang, Z. P., Wang, Y. F., Bian, J. M., Fu, C. D., Huang, B., Ji, X. B., Sun, S. S., Yan, L., & Zhang, J. Y. (2010). Primary vertex reconstruction based on the Kalman filter technique at BESIII. Chinese Physics C, 34(1), 92-98. https://doi.org/10.1088/1674-1137/34/1/017