Study of Particle Identification Using dE/dx in the BES Large Cylindrical Drift Chamber

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Rong Gang, Ma Jimao, Mao Huishun, Bai JingZhi, Xie Peipei, Yan Jie, Wang Yunyong, Mao Zepu, Liu Rongguang, Sun Shijun, Li Weiguo, Song Xiaofei and Wu Zhendong. Study of Particle Identification Using dE/dx in the BES Large Cylindrical Drift Chamber[J]. Chinese Physics C, 1996, 20(7): 577-587.
Rong Gang, Ma Jimao, Mao Huishun, Bai JingZhi, Xie Peipei, Yan Jie, Wang Yunyong, Mao Zepu, Liu Rongguang, Sun Shijun, Li Weiguo, Song Xiaofei and Wu Zhendong. Study of Particle Identification Using dE/dx in the BES Large Cylindrical Drift Chamber[J]. Chinese Physics C, 1996, 20(7): 577-587. shu
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Received: 1900-01-01
Revised: 1900-01-01
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Study of Particle Identification Using dE/dx in the BES Large Cylindrical Drift Chamber

    Corresponding author: Rong Gang,
  • Institute of High Energy of Physics, The Chinese Academy of Sciences, Beijing 100039

Abstract: The method for particle identification using dE/dx in the BES large cylindrical drift chamber has been briefly described. The performance of the particle identification using dE/dx has been given. After applying systematic effect corrections and absolute energy calibration to the dE/dx raw data, the dE/dx energy rssolution of 7.5% has been obtained for minimum ionization particles (0.4-0.5GeV /c π) in a case corresponding to more than 30 dE/dx samples per track.This results in 3σK/π separation for momentum up to 0.65GeV /c and 3σe /π separation in a momentum range of 0.2≤p≤4GeV/c.

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