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Chinese Physics C> 2001, Vol. 25> Issue(2) : 89-94 

Measurement of Integrated Luminosity in R Scan

  •  Institute of High Energy Physics, CAS, Beijing 100039, China

  • A method is introduced for the measurement of integrated luminosity in R scan by large-angle Bhabha events. Compared with the previous method, some improvements have been made in both events selection and determination of detection efficiency. Several methods are employed to check our results and have given compatible luminosities within errors.
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    [1] Bai Jing–Zhi et al. Nucl. Instr. Meth., 1994, A344:319 2 BES Collaboration. HEP NP, 1992, 16:769 (in Chinese)(BES合作组. 高能物理与核物理,1992,16:769) 3 NI Hui–Ling et al. HEP HP, 1990, 14:491 (in Chinese)(倪惠玲等. 高能物理与核物理,1990,14:491)4 BES Collaboration. HEP NP, 1997, 21:97 (in Chinese)(BES合作组.高能物理与核物理,1997,21:97) 5 YUAN Chang–Zhen. Luminosity Determination for R Project. Internal Report. Beijing, 1998 6 HUANG Guang–Shun. Study of Trigger Efficiency, 8rd BES Annual Meeting, Beijing, Jun. 1999 7 Berends F A, Kleiss R. Nucl. Phys., 1983, B228:537 8 Kong Derrick. Luminosity Determination for 99 R scan, 8rd BES Annual Meeting,Beijing, Jun. 19999 HUANG Guang–Shun et al. HEP NP, 2000, 24:373 (in Chinese)(黄光顺等. 高能物理与核物理,2000,24:373) 10 BAI Jing–Zhi et al. PRL. Jan. 2000, 84:594–597

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WANG Zhi-Yong, YUAN Chang-Zheng, HUANG Guang-Shun, CHENG Bao-Sen, QI Xiang-Rong, CHEN Guang-Pei, CHEN Jiang-Chuan, HU Hai-Ming, HU Tao, Li Jin, MAO Ze-Pu, XUE Sheng-Tian, ZHOU Li and ZHAO Zheng-Guo. Measurement of Integrated Luminosity in R Scan[J]. Chinese Physics C, 2001, 25(2): 89-94.
WANG Zhi-Yong, YUAN Chang-Zheng, HUANG Guang-Shun, CHENG Bao-Sen, QI Xiang-Rong, CHEN Guang-Pei, CHEN Jiang-Chuan, HU Hai-Ming, HU Tao, Li Jin, MAO Ze-Pu, XUE Sheng-Tian, ZHOU Li and ZHAO Zheng-Guo. Measurement of Integrated Luminosity in R Scan[J]. Chinese Physics C, 2001, 25(2): 89-94. shu
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Received: 2000-04-25
Revised: 1900-01-01
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Measurement of Integrated Luminosity in R Scan

    Corresponding author: WANG Zhi-Yong,
  • Institute of High Energy Physics, CAS, Beijing 100039, China
  • Received Date: 2000-04-25
  • Accepted Date: 1900-01-01
  • Available Online: 2001-02-05

Abstract: A method is introduced for the measurement of integrated luminosity in R scan by large-angle Bhabha events. Compared with the previous method, some improvements have been made in both events selection and determination of detection efficiency. Several methods are employed to check our results and have given compatible luminosities within errors.

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