Determination of the number of events with inclusive decays
Jul 4, 201610 pages
Published in:
- Chin.Phys.C 41 (2017) 1, 013001
- Published: Jan 12, 2017
e-Print:
- 1607.00738 [hep-ex]
Experiments:
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Abstract: (IOP)
A measurement of the number of J/ψ events collected with the BESIII detector in 2009 and 2012 is performed using inclusive decays of the J/ψ. The number of J/ψ events taken in 2009 is recalculated to be (223.7 ± 1.4) × 10(6), which is in good agreement with the previous measurement, but with significantly improved precision due to improvements in the BESIII software. The number of J/ψ events taken in 2012 is determined to be (1086.9 ± 6.0) × 10(6). In total, the number of J/ψ events collected with the BESIII detector is measured to be (1310.6 ± 7.0) × 10(6), where the uncertainty is dominated by systematic effects and the statistical uncertainty is negligible.Note:
- 10 pages, 6 figures
- electron positron: annihilation
- electron positron: colliding beams
- J/psi(3100): electroproduction
- J/psi(3100): decay
- electron: pair production
- muon: pair production
- BES
- Beijing Stor
- programming
- statistical
References(13)
Figures(0)
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