Particle Identification and Its Efficiency for Small Angle GDH Experiment in JLab Hall-A

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LV Hai-Jiang, YE Yun-Xiu, YAN Xin-Hu, JIANG Yi, ZHANG Pei and YE Qiu-Jian. Particle Identification and Its Efficiency for Small Angle GDH Experiment in JLab Hall-A[J]. Chinese Physics C, 2007, 31(8): 764-768.
LV Hai-Jiang, YE Yun-Xiu, YAN Xin-Hu, JIANG Yi, ZHANG Pei and YE Qiu-Jian. Particle Identification and Its Efficiency for Small Angle GDH Experiment in JLab Hall-A[J]. Chinese Physics C, 2007, 31(8): 764-768. shu
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Received: 2007-01-04
Revised: 2007-01-22
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Particle Identification and Its Efficiency for Small Angle GDH Experiment in JLab Hall-A

    Corresponding author: LV Hai-Jiang,
  • Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China2 Department of Physics, Huangshan University, Huangshan 245021, China

Abstract: To obtain a pure electron sample with high statistics, which is necessary for the asymmetry and cross section analysis for the small angle GDH experiment in JLab Hall-A, the information in shower and gas Cerenkov has been used in the particle identification. Due to the dependence of the kinematics, the PID cut and the corresponding efficiency have been optimized for different runs.

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