Engineering topics
Hu, C.
Publications and source records attributed to Hu, C..
Measurement of the leptonic decay width of J/ψ using initial state radiation
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Determination of the number of J/ψ events with inclusive J/ψ decays
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.
Measurements of the center-of-mass energies at BESIII via the di-muon process
From 2011 to 2014, the BESIII experiment collected about 5 fb -1 data at center-of-mass energies around 4 GeV for the studies of the charmonium-like and higher excited charmonium states. By analyzing the di-muon process e + e - → γ ISR/FSR μ + μ - , the center-of-mass energies of the data samples are measured with a precision of 0.8 MeV. The center-of-mass energy is found to be stable for most of the time during data taking.
Study of ψ decays to the Ξ − Ξ ¯ + and Σ ( 1385 ) ∓ Σ ¯ ( 1385 ) ± final states
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Observation of the Singly Cabibbo-Suppressed Decay D + → ω π + and Evidence for D 0 → ω π 0
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Measurement of the e+e−→π+π− cross section between 600 and 900 MeV using initial state radiation
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Natural and unnatural oil slicks in the Gulf of Mexico: OIL SLICKS IN THE GULF OF MEXICO
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