Determination of the number of J/ψ events with inclusive J/ψ decays
M Ablikim, MN Achasov, XC Ai, O Albayrak… - Chinese …, 2017 - iopscience.iop.org
M Ablikim, MN Achasov, XC Ai, O Albayrak, M Albrecht, DJ Ambrose, A Amoroso, FF An…
Chinese Physics C, 2017•iopscience.iop.orgA 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 …
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 …
Abstract
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.
iopscience.iop.org