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

LV Hai-Jiang; YE Yun-Xiu; YAN Xin-Hu; JIANG Yi; ZHANG Pei; YE Qiu-Jian

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2024年10月30日

Chinese Physics C> 2007, Vol. 31> Issue(8) : 764-768

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

Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China2 Department of Physics, Huangshan University, Huangshan 245021, China

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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.

References

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. Gerasimov S. Yaz., 1965, 2: 598; Drell S D, Hearn A C.Phys. Rev. Lett., 1966, 16: 9082. Fermi E. Phys. Rev., 1940, 57: 4583. Alcorn J et al(JLab Collaboration). NIM, 2004, A522: 2944. Iodice M. NIM, 1998, A411: 2235. L#220; Hai-Jiang, YAN Xin-Hu, YE Yun-Xiu et al. HEP NP, 2007, 31(5): 492(in Chinese)(吕海江，闫新虎，叶云秀等.高能物理与核物理，2007, 31(5):492)6. L#220; Hai-Jiang, JIANG Yi, YE Yun-Xiu et al. HEP NP,2007, 31(1): 84-87(in Chinese)( 吕海江，蒋一，叶云秀等.高能物理与核物理，2007, 31(1):84-87)

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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.

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Received: 2007-01-04
Revised: 2007-01-22

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沈阳化工大学材料科学与工程学院沈阳 110142

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

Received Date: 2007-01-04
Accepted Date: 2007-01-22
Available Online: 2007-08-05

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.