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Chinese Physics C> 2016, Vol. 40> Issue(2) : 026201 DOI: 10.1088/1674-1137/40/2/026201

Study of tracking efficiency and its systematic uncertainty from J/ψ→pp π+π- at BESIII

  • 1.

      Nanjing University, Nanjing 210093, China

  • 2.

      Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

  • Based on J=ψ events collected with the BESIII detector, with corresponding Monte Carlo samples, the tracking effciency and its systematic uncertainty are studied using a control sample of J/ψ→ppπ+π-. Validation methods and different factors infiuencing the tracking effciency are presented in detail. The tracking effciency and its systematic uncertainty for protons and pions with the transverse momentum and polar angle dependence are also discussed.
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  • References

    [1] M. Ablikim et al, (BESIII Collaboration), Nucl. Instrum. Methods Phys. Res., Sect. A, 614: 345 (2010)
    [2] J. Z. Bai et al (BES Collaboration), Nucl. Instrum. Methods Phys. Res., Sect. A, 344: 319 (1994); J. Z. Bai et al (BES Collaboration), Nucl. Instrum. Methods Phys. Res., Sect. A, 458: 627 (2001)
    [3] M. Ablikim et al (BESIII Collaboration), Chin. Phys. C, 36: 915 (2012)
    [4] S. Agostinelli et al (GEANT4 Collaboration), Nucl. Instrum. Methods Phys. Res., Sect. A, 506: 250 (2003)
    [5] S. Jadach, B. F. L. Ward, and Z. Was, Comput. Phys. Commun., 130: 260 (2000); S. Jadach, B. F. L. Ward, and Z. Was, Phys. Rev. D, 63: 113009 (2001)
    [6] D. J. Lange, Nucl. Instrum. Methods Phys. Res., Sect. A, 462: 152 (2001)
    [7] K. Olive, et al (Particle Data Group), Chin. Phys. C, 38: 090001 (2014)
    [8] J. C. Chen, G. S. Huang, X. R. Qi et al, Phys. Rev. D, 62: 034003 (2000)
    [9] L. K. Jia, Z. P. Mao, W. D. Li et al, Chin. Phys. C, 34: 1866 (2010)
    [10] R. Zhang, D. Xiao, F. F. An et al, Chin. Phys. C, 38: 026201 (2014)

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Wen-Long Yuan, Xiao-Cong Ai, Xiao-Bin Ji, Shen-Jian Chen, Yao Zhang, Ling-Hui Wu, Liang-Liang Wang and Ye Yuan. Study of tracking efficiency and its systematic uncertainty from J/ψ→pp π+π- at BESIII[J]. Chinese Physics C, 2016, 40(2): 026201. doi: 10.1088/1674-1137/40/2/026201
Wen-Long Yuan, Xiao-Cong Ai, Xiao-Bin Ji, Shen-Jian Chen, Yao Zhang, Ling-Hui Wu, Liang-Liang Wang and Ye Yuan. Study of tracking efficiency and its systematic uncertainty from J/ψ→pp π+π- at BESIII[J]. Chinese Physics C, 2016, 40(2): 026201.  doi: 10.1088/1674-1137/40/2/026201 shu
Milestone
Received: 2015-07-14
Revised: 2015-09-21
Fund

    Supported by Joint Funds of National Natural Science Foundation of China (U1232201), National Natural Science Foundation of China (11275210, 11205182, 11205184) and National Key Basic Research Program of China (2015CB856700)

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Study of tracking efficiency and its systematic uncertainty from J/ψ→pp π+π- at BESIII

    Corresponding author: Wen-Long Yuan,
  • 1.  Nanjing University, Nanjing 210093, China
  • 2.  Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
  • Received Date: 2015-07-14
  • Accepted Date: 2015-09-21
  • Available Online: 2016-02-20
Fund Project:  Supported by Joint Funds of National Natural Science Foundation of China (U1232201), National Natural Science Foundation of China (11275210, 11205182, 11205184) and National Key Basic Research Program of China (2015CB856700)

Abstract: Based on J=ψ events collected with the BESIII detector, with corresponding Monte Carlo samples, the tracking effciency and its systematic uncertainty are studied using a control sample of J/ψ→ppπ+π-. Validation methods and different factors infiuencing the tracking effciency are presented in detail. The tracking effciency and its systematic uncertainty for protons and pions with the transverse momentum and polar angle dependence are also discussed.

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