Key points are not available for this paper at this time.
We report a determination of the CKM angle ₃, also known as, from a combination of measurements using samples of up to 711~fb^-1 from the Belle experiment and up to 362~fb^-1 from the Belle II experiment. We combine results from analyses of B^+ DK^+, B^+ D^+, and B^+ D^*K^+ decays, where D is an admixture of D⁰ and D^0 mesons, in a likelihood fit to obtain ₃ = (78. 6^+7. 2-₇. ₃) ^. We also briefly discuss the interpretation of this result.
Belle et al. (Fri,) studied this question.