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

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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
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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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