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


Ablikim M., Achasov M., Ai X., Albayrak O., Albrecht M., Ambrose D., ...More

Chinese Physics C, vol.41, no.1, 2017 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 41 Issue: 1
  • Publication Date: 2017
  • Doi Number: 10.1088/1674-1137/41/1/013001
  • Journal Name: Chinese Physics C
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: BESIII detector, inclusive J/ψ events, number of J/ψ events
  • Ankara University Affiliated: Yes

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) × 106, 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) × 106. In total, the number of J/ψ events collected with the BESIII detector is measured to be (1310.6 ± 7.0) × 106, where the uncertainty is dominated by systematic effects and the statistical uncertainty is negligible.