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Study of the tracking efficiency of charged pions at BESIII

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arxiv 2412.00469 v1 pith:JGFLGUS6 submitted 2024-11-30 hep-ex

Study of the tracking efficiency of charged pions at BESIII

classification hep-ex
keywords chargedpionsefficiencytrackingbesiiianglebinscollected
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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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  1. Dr.Sai: An agentic AI for real-world physics analysis at BESIII

    hep-ex 2026-04 unverdicted novelty 7.0

    Dr.Sai autonomously executed full physics analysis pipelines on real BESIII data to re-measure ten J/psi decay branching fractions, matching established benchmarks without any manual coding.