Lagrange multiplier method used in BESIII kinematic fitting

Liang Yan, Rang Lin He, Wei Guo Li, Jian Ming Bian, Cheng Dong Fu, Bin Huang, Ying Liu, Qi Wen Lü, Fei Peng Ning, Sheng Sen Sun, Min Xu, Jian Yong Zhang, Yong Sheng Zhu

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

In this paper, the kinematic fitting with the Lagrange multiplier method has been studied for BESIII experiment. First we introduce the Lagrange multiplier method and implement kinematic constraints. Then we present the performance of the kinematic fitting algorithm. With the kinematic fitting, we can improve the resolution of track parameters and reduce the background.

Original languageEnglish (US)
Pages (from-to)204-209
Number of pages6
JournalChinese Physics C
Volume34
Issue number2
DOIs
StatePublished - Feb 23 2010

Keywords

  • BESIII
  • Kinematic fitting
  • Lagrange multiplier

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    Yan, L., He, R. L., Li, W. G., Bian, J. M., Fu, C. D., Huang, B., Liu, Y., Lü, Q. W., Ning, F. P., Sun, S. S., Xu, M., Zhang, J. Y., & Zhu, Y. S. (2010). Lagrange multiplier method used in BESIII kinematic fitting. Chinese Physics C, 34(2), 204-209. https://doi.org/10.1088/1674-1137/34/2/009