Study of the tracking efficiency of charged pions at BESIII

2024/11/30 by Liu, Fang, Ji, Xiao-Bin, Sun, Sheng-Sen +11
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex)

paper · doi:10.48550/arxiv.2412.00469

Abstract

Using (10087 ± 44) × 10⁶ J/ψ events collected with the BESIII detector in 2009, 2012, 2018 and 2019, the tracking efficiency of charged pions is studied using the decay J/ψ→ π⁺ π^- π⁰. 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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