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Final R-value results from 2-5 GeV from BES and QCD test with R scan data

Final results of the measurement of $R = σ(e^+e^- \to hadrons) /σ(e^+e^- \to μ^+μ^-)$ in the energy region from 2 to 5 GeV with the upgraded Beijing Spectrometer (BESII) at the Beijing Electron Positron Collider (BEPC) are presented. Preliminary results of the inclusive momentum spectra and second binomial moment measured with the $R$ scan data at 2.2, 2.6, 3.0, 3.2, 4.6 and 4.8 GeV are reported.

preprint2002arXivOpen access
W. B. YanW. G. LiZ. G. Zhao
hep-ex
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Open access3 authors1 topic
Imported metadata coverageMissing code, dataset, citation and institution fields are tracked without dominating the paper.Details
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W. B. YanW. G. LiZ. G. Zhao

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