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Measurement of the branching fraction and CP asymmetry for B → D ¯ 0π decays
T. Bloomfield, M.E. Sevior, I. Adachi, H. Aihara, S. Al Said, D.M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. BabuShow More
Published in American Physical Society
Volume: 105
Issue: 7
We measure the branching fractions and CP asymmetries for the decays B0→D¯0π0 and B+→D¯0π+, 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¯0π0)=[2.70±0.06(stat)±0.10(syst)]×10-4, B(B+→D¯0π+)=[4.53±0.02(stat)±0.15(syst)]×10-3, ACP(B0→D¯0π0)=[+0.42±2.05(stat)±1.22(syst)]%, and ACP(B+→D¯0π+)=[+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¯0π+). The measurement of ACP for B0→D¯0π0 is the first for this mode, and the value is consistent with Standard Model expectations. © 2022 authors. Published by the American Physical Society.
About the journal
JournalPhysical Review D
PublisherAmerican Physical Society