The Belle II Collaboration

17 July 2020

Abstract: This note reports the number of BB pairs as measured in data collected in 2019 and the first part of 2020, corresponding to an integrated luminosity of 8.8 fb-1 and 25.8 fb-1, respectively. The plots of the event shape variable R2, for on-resonance and off-resonance data, are also presented. The details of the analysis are reported in the physics note BELLE2-NOTE-PH-2019-025.