Introduction of Belle II experiment
Belle II is the B factory experiment upgraded from Belle as KEKB upgraded to SuperKEKB. It is designed to make precise measurements of weak interaction parameters and to probe new physics beyond the Standard Model. In June 2022, SuperKEKB achieved a new luminosity world record, 4.7×1034 cm-2s-1. Up to now, 427.79 fb-1 data have been recorded in Belle II.