Study of the online event filtering algorithm for BESIII*

Fu Cheng-Dong; Zou Jia-Heng; Mo Xiao-Hu; He Kang-Lin; Bian Jian-Ming; Cao Guo-Fu; Cao Xue-Xiang; Chen Shen-Jian; Deng Zi-Yan; Gao Yuan-Ning; He Miao; Hua Chun-Fei; Huang Bin; Huang Xing-Tao; Ji Xiao-Bin; Li Fei; Li Hai-Bo; Li Wei-Dong; Liang Yu-Tie; Liu Chun-Xiu; Liu Huai-Min; Liu Qiu-Guang; Liu Suo; Liu Ying-Jie; Ma Qiu-Mei; Ma Xiang; Mao Ya-Jun; Mao Ze-Pu; Pan Ming-Hua; Pang Cai-Ying; Ping Rong-Gang; Qin Gang; Qin Ya-Hong; Qiu Jin-Fa; Sun Sheng-Sen; Sun Yong-Zhao; Wang Ji-Ke; Wang Liang-Liang; Wen Shuo-Pin; Wu Ling-Hui; Xie Yu-Guang; Xu Min; Yan Liang; You Zheng-Yun; Yu Guo-Wei; Yuan Chang-Zheng; Yuan Ye; Zhang Bing-Yun; Zhang Chang-Chun; Zhang Jian-Yong; Zhang Xue-Yao; Zhang Yao; Zheng Yang-Heng; Zhu Ke-Jun; Zhu Yong-Sheng; Zhu Zhi-Li

doi:10.1088/1674-1137/32/5/001

Chinese Physics C

Study of the online event filtering algorithm for BESIII^*

Fu Cheng-Dong^1,2, Zou Jia-Heng³, Mo Xiao-Hu², He Kang-Lin², Bian Jian-Ming^2,4, Cao Guo-Fu^2,4, Cao Xue-Xiang^2,4, Chen Shen-Jian⁵, Deng Zi-Yan², Gao Yuan-Ning¹, He Miao^2,4, Hua Chun-Fei⁶, Huang Bin^2,4, Huang Xing-Tao³, Ji Xiao-Bin², Li Fei², Li Hai-Bo², Li Wei-Dong², Liang Yu-Tie⁷, Liu Chun-Xiu², Liu Huai-Min², Liu Qiu-Guang^2,4, Liu Suo⁸, Liu Ying-Jie², Ma Qiu-Mei², Ma Xiang^2,4, Mao Ya-Jun⁷, Mao Ze-Pu², Pan Ming-Hua⁹, Pang Cai-Ying⁹, Ping Rong-Gang², Qin Gang^2,4, Qin Ya-Hong⁶, Qiu Jin-Fa², Sun Sheng-Sen², Sun Yong-Zhao^2,4, Wang Ji-Ke^2,4, Wang Liang-Liang^2,4, Wen Shuo-Pin², Wu Ling-Hui^2,4, Xie Yu-Guang^2,4, Xu Min¹⁰, Yan Liang^2,4, You Zheng-Yun⁷, Yu Guo-Wei², Yuan Chang-Zheng², Yuan Ye², Zhang Bing-Yun², Zhang Chang-Chun², Zhang Jian-Yong^2,11, Zhang Xue-Yao³, Zhang Yao³, Zheng Yang-Heng⁴, Zhu Ke-Jun², Zhu Yong-Sheng² and Zhu Zhi-Li⁹

2008 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences
Chinese Physics C, Volume 32, Number 5 Citation Fu Cheng-Dong et al 2008 Chinese Phys. C 32 329 DOI 10.1088/1674-1137/32/5/001

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¹ Tsinghua University, Beijing 100084, China

² Institute of High Energy Physics, CAS, Beijing 100049, China

³ Shandong University, Jinan 250100, China

⁴ Graduate University of Chinese Academy of Sciences, Beijing 100049, China

⁵ Nanjing University, Nanjing 210093, China

⁶ Zhengzhou University, Zhengzhou 450001, China

⁷ Peking University, Beijing 100871, China

⁸ Liaoning University, Shenyang 110036, China

⁹ Guangxi Normal University, Guilin 541004, China

¹⁰ Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China

¹¹ CCAST(World Laboratory), Beijing 100080, China

Dates

Received 25 July 2007

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Abstract

The results of a study of event tagging strategies for elementary physics processes in the τ-charm region are presented. The algorithm for online event filtering is optimized by adopting the information provided by different sub-detectors according to their strengths and capacities. The algorithm is tested with various generated physics and background events. The results indicate that the algorithm satisfies the requirements of BESIII physics analysis and its DAQ system.

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*
Supported by CAS Knowledge Innovation Project(U-602, U-34), National Natural Science Foundation of China (10491300, 10491303, 10605030) and 100 Talents Program of CAS (U-25 and U-54)