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.

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

AMOROSO, Antonio;BIANCHI, Fabrizio;DESTEFANIS, Marco Giovanni Maria;DE MORI, FRANCESCA;GRECO, Michela;HU, Jifeng;MAGGIORA, MARCO;MARCELLO, Simonetta;SOSIO, Stefano;SPATARO, STEFANO GIOVANNI;ZOTTI, LAURA;
2017-01-01

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.
2017
41
1
013001-01
013001-10
http://iopscience.iop.org/article/10.1088/1674-1137/41/1/013001/pdf
BESIII detector, inclusive J/ψ events, number of J/ψ events, Nuclear and High Energy Physics, Instrumentation, Astronomy and Astrophysics
Ablikim, M.; Achasov, M.N.; Ai, X.C.; Albayrak, O.; Albrecht, M.; Ambrose, D.J.; Amoroso, A.; An, F.F.; An, Q.; Bai, J.Z.; Baldini Ferroli, R.; Ban, Y...espandi
File in questo prodotto:
File Dimensione Formato  
Ablikim_2017_chinese_phys._c_41_013001.pdf

Accesso riservato

Tipo di file: PDF EDITORIALE
Dimensione 1.02 MB
Formato Adobe PDF
1.02 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Ablikim_2017_chinese_phys._c_41_013001.1607.00738_4aperto.pdf

Accesso aperto

Tipo di file: POSTPRINT (VERSIONE FINALE DELL’AUTORE)
Dimensione 1.71 MB
Formato Adobe PDF
1.71 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1635090
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 68
  • ???jsp.display-item.citation.isi??? 14
social impact