Improvement of main drift chamber Monte-Carlo tuning model at BESⅢ

ZHANG Rui; XIAO Dong; AN Fen-Fen; GAO Yuan-Ning; HE Kang-Lin; JI Xiao-Bin; JIN Shan; LI Wei-Dong; LI Wei-Guo; LIU Huai-Min; LIU Kai; SHEN Xiao-Yan; WANG Yi-Fang; WU Ling-Hui; XU Qing-Nian; YUAN Ye; ZHANG Yao; ZHAO Guang; ZHENG Yang-Heng

doi:10.1088/1674-1137/38/2/026201

Chinese Physics C> 2014, Vol. 38> Issue(2) : 026201 DOI: 10.1088/1674-1137/38/2/026201

Improvement of main drift chamber Monte-Carlo tuning model at BESⅢ

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Abstract：
Based on real data, a new parameterized model of the main drift chamber response is proposed. In this model, we tune the ratio of good hits and the residual distribution separately. By data quality checking, the difference between simulation and data in track reconstruction e ciency reduces from 1% to 0.5% averagely for the pion in J/Ψ→π⁺π^-π⁰, and the momentum resolution agreement improves signi cantly for the proton in J/Ψ→pp.

References

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ZHANG Rui, XIAO Dong, AN Fen-Fen, GAO Yuan-Ning, HE Kang-Lin, JI Xiao-Bin, JIN Shan, LI Wei-Dong, LI Wei-Guo, LIU Huai-Min, LIU Kai, SHEN Xiao-Yan, WANG Yi-Fang, WU Ling-Hui, XU Qing-Nian, YUAN Ye, ZHANG Yao, ZHAO Guang and ZHENG Yang-Heng. Improvement of main drift chamber Monte-Carlo tuning model at BESⅢ[J]. Chinese Physics C, 2014, 38(2): 026201. doi: 10.1088/1674-1137/38/2/026201

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Received: 2013-04-22
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Improvement of main drift chamber Monte-Carlo tuning model at BESⅢ

Corresponding author: ZHANG Rui,

Corresponding author: YUAN Ye,

Received Date: 2013-04-22
Accepted Date: 1900-01-01
Available Online: 2014-02-05

Abstract: Based on real data, a new parameterized model of the main drift chamber response is proposed. In this model, we tune the ratio of good hits and the residual distribution separately. By data quality checking, the difference between simulation and data in track reconstruction e ciency reduces from 1% to 0.5% averagely for the pion in J/Ψ→π⁺π^-π⁰, and the momentum resolution agreement improves signi cantly for the proton in J/Ψ→pp.