Koji Hara

12 September 2020
Anomalies 2020

Abstract: The ratios of branching fractions of the semitauonic B decays to the semileptonic B decays, RD(*) are sensitive to the new physics beyond the Standard Model (SM). Recent measurements by Belle, BaBar and LHCb show some deviation from the SM expectation, which may be an anomaly by the new physics contribution. In addition, Belle II has started physics data taking in 2019, and will provide results soon in future. We review the current status of the measurements and future prospect.