Measurement of the integrated luminosity of data samples collected during 2019-2022 by the Belle II experiment

Abstract A series of data samples was collected with the Belle~II detector at the SuperKEKB collider from March 2019 to June 2022. We determine the integrated luminosities of these data samples using three distinct methodologies involving Bhabha ($e^+e^- \to e^+e^-(n\gamma)$), digamma ($e^+e^- \to \gamma\gamma(n\gamma)$), and dimuon ($e^+e^- \to \mu^+ \mu^- (n\gamma)$) events. The total integrated luminosity obtained with Bhabha, digamma, and dimuon events is ({426.88}$\pm$ 0.03 $\pm${2.61})~fb$^{-1}$, ({429.28}$\pm$ 0.03 $\pm${2.62})~fb$^{-1}$, and ({423.99}$\pm$ 0.04 $\pm${3.83})~fb$^{-1}$, where the first uncertainties are statistical and the second are systematic. The resulting total integrated luminosity obtained from the combination of the three methods is ({427.87 $\pm$ 2.01})~fb$^{-1}$.
Tags
Working group Performance
Principal authors @  Chengping Shen, Jianshe Zhou, Xing-Yu Zhou, Radek Zlebcik
Reference Chin.Phys.C 49, 013001 (2025), DOI: 10.1088/1674-1137/ad806c
Document BELLE2-PUB-PH-2024-051
Links arXiv:2407.00965, Inspire, CHPHC
Bibtex 
@article{Belle-II:2024vuc,
    author = "Adachi, I. and others",
    collaboration = "Belle-II",
    title = "{Measurement of the integrated luminosity of data samples collected during 2019-2022 by the Belle II experiment*}",
    eprint = "2407.00965",
    archivePrefix = "arXiv",
    primaryClass = "hep-ex",
    reportNumber = "Belle II Preprint 2024-019; KEK Preprint 2024-16",
    doi = "10.1088/1674-1137/ad806c",
    journal = "Chin. Phys. C",
    volume = "49",
    number = "1",
    pages = "013001",
    year = "2025"
}