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Study of tracking efficiency and its systematic uncertainty from J/ψ → pp̅ <i>π</i> <sup>+</sup> <i>π</i> <sup>−</sup> at BESIII
Based on J/ψ events collected with the BESIII detector, with corresponding Monte Carlo samples, the tracking efficiency and its systematic uncertainty are studied using a control sample of J/ψ → pp̅π+π−. Validation methods and different factors influencing the tracking efficiency are presented in detail. The tracking efficiency and its systematic …