Determination of the number of J/psi events with inclusive J/psi decays

Kolcu, Onur Buğra

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Erişim

info:eu-repo/semantics/openAccessAttribution 3.0 United Stateshttp://creativecommons.org/licenses/by/3.0/us/

Tarih

2017

Yazar

Kolcu, Onur Buğra

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Künye

Ablikim, M., Achasov, M. N., Ai, X. C., Albayrak, O., Albrecht, M., Ambrose, D. J., . . . Collaboration, B. (2017). Determination of the number of J/psi events with inclusive J/psi decays. Chinese Physics C, 41(1), 10. doi:10.1088/1674-1137/41/1/013001

Özet

A measurement of the number of J/psi events collected with the BESIII detector in 2009 and 2012 is performed using inclusive decays of the J/psi. The number of J/psi events taken in 2009 is recalculated to be (223.7 +/- 1.4) x 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/psi events taken in 2012 is determined to be (1086.9 +/- 6.0) x 10(6). In total, the number of J/psi events collected with the BESIII detector is measured to be (1310.6 +/- 7.0) x 10(6), where the uncertainty is dominated by systematic effects and the statistical uncertainty is negligible.