20.500.12556/DKUM-85067 Measurement of the branching fraction and ▫$CP$▫ asymmetry for ▫$B \to \bar{D}^0 \pi$▫ decays 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 ϒ(4S) resonance with the Belle detector at the KEKB e⁺e− collider. The branching fractions obtained and direct CP asym-metries 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. branching fraction hadronic decays particle decays mesons CP violation precision measurements hadronski razpadi razpad delcev mezoni natančne meritve true false true Angleški jezik Slovenski jezik Znanstveno delo 2023-08-17 13:44:18 2023-08-17 13:44:19 2023-08-18 03:09:54 0000-00-00 00:00:00 2022 0 0 str. 072007-1-072007-13 no. 7 Vol. 105 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2022-01-01 539.1 108761347 10.1103/PhysRevD.105.072007 2470-0010 Measurement_of_the_branching_f-Bloomfield-2022.pdf Measurement_of_the_branching_f-Bloomfield-2022.pdf 1 25553DC8BA892DFF09C5BEF1159F80FC a6784233e461fd3e639505395638a257a88ddc7ecca3f5bd755ee23e734fd76e de5ae389-3cf5-11ee-af21-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=169670 https://journals.aps.org/prd/abstract/10.1103/PhysRevD.105.072007 0 f19f5838-3cf5-11ee-af21-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=169671 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0