Study of the efficiency of event start time determination at BESⅢ

GUAN Ying-Hui; ZHENG Yang-Heng; WANG Yi-Fang

doi:10.1088/1674-1137/38/1/016201

Chinese Physics C> 2014, Vol. 38> Issue(1) : 016201 DOI: 10.1088/1674-1137/38/1/016201

Study of the efficiency of event start time determination at BESⅢ

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Abstract：
A method to estimate the efficiency of event start time determination at BESⅢ is developed. This method estimates the efficiency at the event level by combining the efficiencies of various tracks (e, μ, π, K, p, γ) in a Bayesian way. Efficiencies results and the difference between data and MC at the track level are presented in this paper. For a given physics channel, event start time efficiency and systematic error can be estimated following this method.

References

[1]

BESⅢ Preliminary Design Report, 2004[2] BEPCⅡ Preliminary Design Report, 2002[3] Ablikim M et al. Nucl. Instrum. Methods A, 2010, 614(03): 345-399[4] ZHANG Xiao-Mei et al. Nuclear Electronics Detection Technology, 2005, 25(06): 72-77 (in Chinese)[5] MA Xiang et al. Nuclear Electronics Detection Technology, 2007, 27(04): 670-676 (in Chinese)[6] MA Xiang et al. Chinese Physics C (HEP NP), 2008, 32(09): 744-749[7] ZHANG Ling et al. Nuclear Electronics Detection Technology, 2007, 27(03): 491-496 (in Chinese)[8] ZHANG Yao et al. HEP NP, 2007, 31(06): 570-575 (in Chinese)[9] LIU Qiu-Guang et al. Chinese Physics C (HEP NP), 2008, 32(07): 565-571[10] Ablikim M et al. Phys. Rev. D, 2013, 87: 032003

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GUAN Ying-Hui, ZHENG Yang-Heng, WANG Yi-Fang and Study of the efficiency of event start time determination at BESⅢ[J]. Chinese Physics C, 2014, 38(1): 016201. doi: 10.1088/1674-1137/38/1/016201

GUAN Ying-Hui, ZHENG Yang-Heng, WANG Yi-Fang and Study of the efficiency of event start time determination at BESⅢ[J]. Chinese Physics C, 2014, 38(1): 016201. doi: 10.1088/1674-1137/38/1/016201 shu

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Received: 2013-03-15
Revised: 2013-04-02

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沈阳化工大学材料科学与工程学院沈阳 110142

Study of the efficiency of event start time determination at BESⅢ

Corresponding author: ZHENG Yang-Heng,

Received Date: 2013-03-15
Accepted Date: 2013-04-02
Available Online: 2014-01-05

Abstract: A method to estimate the efficiency of event start time determination at BESⅢ is developed. This method estimates the efficiency at the event level by combining the efficiencies of various tracks (e, μ, π, K, p, γ) in a Bayesian way. Efficiencies results and the difference between data and MC at the track level are presented in this paper. For a given physics channel, event start time efficiency and systematic error can be estimated following this method.