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

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13. Ablikim, M., Achasov, M.N., Adlarson, P. et al. Evidence for the ηc (2S) →π+π-η decay[J]. Physical Review D, 2023, 107(5): 052007. doi: 10.1103/PhysRevD.107.052007
14. Ablikim, M., Achasov, M.N., Adlarson, P. et al. Measurement of the cross section of e + e − → ηπ + π − at center-of-mass energies from 3.872 GeV to 4.700 GeV[J]. Journal of High Energy Physics, 2022, 2022(12): 153. doi: 10.1007/JHEP12(2022)153
15. Ablikim, M., Achasov, M.N., Adlarson, P. et al. Search for a massless dark photon in Λc+ →pγ′ decay[J]. Physical Review D, 2022, 106(7): 072008. doi: 10.1103/PhysRevD.106.072008
16. Ablikim, M., Achasov, M.N., Adlarson, P. et al. Measurement of the absolute branching fraction of the singly Cabibbo suppressed decay Λc+ →pη′[J]. Physical Review D, 2022, 106(7): 072002. doi: 10.1103/PhysRevD.106.072002
17. Ablikim, M., Achasov, M.N., Adlarson, P. et al. Search for new hadronic decays of hc and observation of hc → pp¯ η[J]. Journal of High Energy Physics, 2022, 2022(5): 108. doi: 10.1007/JHEP05(2022)108
18. Ablikim, M., Achasov, M.N., Adlarson, P. et al. Measurement of the e+e- →ωπ0π0 cross section at center-of-mass energies from 2.0 to 3.08 GeV[J]. Physical Review D, 2022, 105(3): 032005. doi: 10.1103/PhysRevD.105.032005
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26. Ablikim, M., Achasov, M.N., Ahmed, S. et al. Measurements of cross section of e+e−→pp¯π0 at center-of-mass energies between 4.008 and 4.600 GeV[J]. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2017. doi: 10.1016/j.physletb.2017.05.033
Get Citation
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
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Received: 2015-07-14
Revised: 2015-09-21
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    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
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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