Measurement of the branching fraction and CP asymmetry for B ? D � 0? decays

Abstract

We measure the branching fractions and CP asymmetries for the decays B0?D�0?0 and B+?D�0?+, using a data sample of 772�106 BB� pairs collected at the (4S) resonance with the Belle detector at the KEKB e+e- collider. The branching fractions obtained and direct CP asymmetries are B(B0?D�0?0)=[2.70�0.06(stat)�0.10(syst)]�10-4, B(B+?D�0?+)=[4.53�0.02(stat)�0.15(syst)]�10-3, ACP(B0?D�0?0)=[+0.42�2.05(stat)�1.22(syst)]%, and ACP(B+?D�0?+)=[+0.19�0.36(stat)�0.57(syst)]%. The measurements of B are the most precise to date and are in good agreement with previous results, as is the measurement of ACP(B+?D�0?+). The measurement of ACP for B0?D�0?0 is the first for this mode, and the value is consistent with Standard Model expectations. � 2022 authors. Published by the American Physical Society.