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Lagrange multiplier method used in BESⅢ kinematic fitting

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【作者】 严亮； 何康林； 李卫国； 边渐鸣； 傅成栋； 黄彬； 刘颖； 吕绮雯； 宁飞鹏； 孙胜森； 徐敏； 张建勇； 朱永生；

【Author】 YAN Liang1,2 HE Kang-Lin1 LI Wei-Guo1 BIAN Jian-Ming1,2 FU Cheng-Dong1 HUANG Bin1,2 LIU Ying3 L Qi-Wen4 NING Fei-Peng4 SUN Sheng-Sen1 XU Min5 ZHANG Jian-Yong1 ZHU Yong-Sheng11 Institute of High Energy Physics,CAS,Beijing 100049,China 2 Graduate University of Chinese Academy of Sciences,Beijing 100049,China 3 Guangxi University,Nanning 530004,China 4 Shanxi University,Taiyuan 030006,China 5 Department of Modern Physics,University of Science and Technology of China,Hefei 230026,China

【机构】 Institute of High Energy Physics,CAS； Graduate University of Chinese Academy of Sciences； Guangxi University； Shanxi University； Department of Modern Physics,University of Science and Technology of China；

【摘要】 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.

【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.

【关键词】 BESⅢ； kinematic fitting； Lagrange multiplier；
【Key words】 BESⅢ； kinematic fitting； Lagrange multiplier；
【基金】 Supported by National Natural Science Foundation of China (10491300,10491303,10735080);Research and Development Project of Important Scientific Equipment of CAS (H7292330S7)
  • 【文献出处】 中国物理C ,Chinese Physics C , 编辑部邮箱 ,2010年02期
  • 【分类号】O411
  • 【被引频次】1
  • 【下载频次】39
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