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

BESIII Collaboration

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    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.
    Originele taal-2English
    Artikelnummer013001
    Aantal pagina's10
    TijdschriftChinese physics c
    Volume41
    Nummer van het tijdschrift1
    DOI's
    StatusPublished - jan.-2017

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