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arXiv · 2412.00469

Study of the tracking efficiency of charged pions at BESIII

Fang Liu·Xiao-Bin Ji·Sheng-Sen Sun·Huai-Min Liu·Shuang-Shi Fang·Xiao-Ling Li·Tong Chen·Xin-Nan Wang·Ming-Run Li·Liang-Liang Wang·Ling-Hui Wu·Ye Yuan·Yao Zhang·Wen-Jing Zhu
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Abstract

Using $(10087 \pm 44) \times 10^6$ $J/\psi$ events collected with the BESIII detector in 2009, 2012, 2018 and 2019, the tracking efficiency of charged pions is studied using the decay $J/\psi \rightarrow \pi^+ \pi^- \pi^0$. The systematic uncertainty of the tracking efficiency and the corresponding correction factors for charged pions are evaluated, in bins of transverse momentum and polar angle of the charged pions.

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Fang Liu, Xiao-Bin Ji, Sheng-Sen Sun, Huai-Min Liu, Shuang-Shi Fang, Xiao-Ling Li, Tong Chen, Xin-Nan Wang, Ming-Run Li, Liang-Liang Wang, Ling-Hui Wu, Ye Yuan, Yao Zhang, Wen-Jing Zhu. 2024-11-30. Study of the tracking efficiency of charged pions at BESIII. https://arxiv.org/abs/2412.00469

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