Journal
CHINESE PHYSICS C
Volume 46, Issue 7, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1674-1137/ac5c2e
Keywords
number of J/psi events; BESIII detector; inclusive J/psi decays
Categories
Funding
- National Key R&D Program of China [2020YFA0406300, 2020YFA0406400]
- National Natural Science Foundation of China (NSFC) [11625523, 11635010, 11735014, 11822506, 11835012, 11935015, 11935016, 11935018, 11961141012, 12022510, 12025502, 12035009, 12035013, 12061131003, 12075252]
- Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program
- NSFC [U1732263, U1832207]
- CAS [U1732263, U1832207]
- CAS Key Research Program of Frontier Sciences [QYZDJ-SSW-SLH040]
- 100 Talents Program of CAS
- Shanghai Key Laboratory for Particle Physics and Cosmology
- ERC [758462]
- European Union Horizon 2020 research and innovation programme Marie Sklodowska-Curie grant agreement [894790]
- German Research Foundation DFG [443159800]
- Istituto Nazionale di Fisica Nucleare, Italy
- Ministry of Development of Turkey [DPT2006K-120470]
- National Science and Technology fund
- Olle Engkvist Foundation [2000605]
- STFC (United Kingdom)
- Knut and Alice Wallenberg Foundation (Sweden) [2016.0157]
- Royal Society, UK [DH140054, DH160214]
- Swedish Research Council
- U.S. Department of Energy [DE-FG02-05ER41374, DE-SC-0012069]
- INPAC
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Using inclusive decays of J/psi, a precise determination of the number of J/psi events collected with the BESIII detector was performed. The numbers of J/psi events for the datasets in 2009, 2012, and 2017-2019 were calculated and found to be in good agreement with previous measurements.
Using inclusive decays of J/psi, a precise determination of the number of J/psi events collected with the BESIII detector was performed. For the two data sets taken in 2009 and 2012, the numbers of J/psi events were recalculated (224.0 +/- 1.3) x 10(6) (1088.5 +/- 4.4) x 10(6), respectively; these numbers are in good agreement with the previous measurements. For the J/psi sample taken in 2017-2019, the number of events was determined to be (8774 .0 +/- 39 .4) x 10(6). The total number of J/psi events collected with the BESIII detector was determined to be (10087 +/- 44) x 10(6), where the uncertainty is dominated by systematic effects, and the statistical uncertainty is negligible.
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