Çetin, Serkant Ali2021-03-112021-03-112017-01https://hdl.handle.net/11411/3375https://doi.org/10.1088/1674-1137/41/1/013001A 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.eninfo:eu-repo/semantics/openAccessnumber of J/psi eventsBESIII detectorinclusive J/psi eventsArticle2-s2.0-8501046986710.1088/1674-1137/41/1/013001Q2Q2WOS:000393254200001