Corrections to BESⅡ TOF Time and Its Resolution

PENG Hai-Ping; SHEN Xiao-Yan; LI Hai-Bo; ZHANG Zi-Ping; CHEN Hong-Fang; YE Shu-Wei

Chinese Physics C> 2002, Vol. 26> Issue(10) : 1078-1086

Corrections to BESⅡ TOF Time and Its Resolution

Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China2 Institute of High Energy Physics, CAS, Beijing 100039, China

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Abstract：
With the 58 million J/ψ data taken at BESⅡ in the last two years, a good particle identification (PID) becomes more important in data analyses. Since BESⅡ TOF is an important subsystem for PID, it is necessary to study TOF time and its resolution in detail. Using the 58 million J/ψ data we have studied the corrections for TOF time offset and its resolution, and finaly given out the correction result and PID efficiency.

References

[1]

BAI Jing-Zhi et al(BES Collaboration).BESU pgrade,Nucl.Instr.Meth.,2001,A458:627—637 2 ZHU Yong-Sheng et at.Probability and Statisticsin Experimental Physics.Beijing:Science publisher,1991(in Chinese)(朱永生等.实验物理中的概率与统计.北京:科学出版社,1991)3 RONG Gang et at.HEPNP ,2001,25:154—159(in Chinese)(荣刚等,高能物理与核物理2001,25:154—159)

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PENG Hai-Ping, SHEN Xiao-Yan, LI Hai-Bo, ZHANG Zi-Ping, CHEN Hong-Fang and YE Shu-Wei. Corrections to BESⅡ TOF Time and Its Resolution[J]. Chinese Physics C, 2002, 26(10): 1078-1086.

PENG Hai-Ping, SHEN Xiao-Yan, LI Hai-Bo, ZHANG Zi-Ping, CHEN Hong-Fang and YE Shu-Wei. Corrections to BESⅡ TOF Time and Its Resolution[J]. Chinese Physics C, 2002, 26(10): 1078-1086. shu

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Received: 2001-12-14
Revised: 1900-01-01

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