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| Main Author: | |
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| Format: | Preprint |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2111.07571 |
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| _version_ | 1866914772280147968 |
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| author | BESIII Collaboration |
| author_facet | BESIII Collaboration |
| contents | Using inclusive decays of the $\rm J/ψ$, a precise determination of the number of $\rm J/ψ$ events collected with the BESIII detector is performed. For the two data sets taken in 2009 and 2012, the numbers of $\rm J/ψ$ events are recalculated to be $(224.0 \pm 1.3)\times10^6$ and $(1088.5 \pm 4.4)\times10^6$ respectively, which are in good agreement with the previous measurements. For the $\rm J/ψ$ sample taken in 2017--2019, the number of events is determined to be $(8774.0 \pm 39.4)\times10^{6}$. The total number of $\rm J/ψ$ events collected with the BESIII detector is determined to be $(10087 \pm 44)\times10^{6}$, where the uncertainty is dominated by systematic effects and the statistical uncertainty is negligible. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2111_07571 |
| institution | arXiv |
| publishDate | 2021 |
| record_format | arxiv |
| spellingShingle | Number of $\rm J/ψ$ events at BESIII BESIII Collaboration High Energy Physics - Experiment Using inclusive decays of the $\rm J/ψ$, a precise determination of the number of $\rm J/ψ$ events collected with the BESIII detector is performed. For the two data sets taken in 2009 and 2012, the numbers of $\rm J/ψ$ events are recalculated to be $(224.0 \pm 1.3)\times10^6$ and $(1088.5 \pm 4.4)\times10^6$ respectively, which are in good agreement with the previous measurements. For the $\rm J/ψ$ sample taken in 2017--2019, the number of events is determined to be $(8774.0 \pm 39.4)\times10^{6}$. The total number of $\rm J/ψ$ events collected with the BESIII detector is determined to be $(10087 \pm 44)\times10^{6}$, where the uncertainty is dominated by systematic effects and the statistical uncertainty is negligible. |
| title | Number of $\rm J/ψ$ events at BESIII |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2111.07571 |