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CHINESE PHYSICS C 44, 021001 (2020)

ISSN: 1674-1137, SCI

Measurement of the integrated luminosity of the Phase 2 data of the Belle II experiment

F. Abuinén, ..., N. Anh Ky et al. [Belle II collaboration]

From April to July 2018, a data sample at the peak energy of the Υ(4S) resonance was collected with the Belle II detector at the SuperKEKB electron-positron collider. This is the first data sample of the Belle II experiment. Using Bhabha and digamma events, we measure the integrated luminosity of the data sample to be (496.3±0.3±3.0) pb−1 , where the first uncertainty is statistical and the second is systematic. This work provides a basis for future luminosity measurements at Belle II.

DOI: 10.1088/1674-1137/44/2/021001