| Title: | Measurement of the branching fraction and ▫$CP$▫ asymmetry for ▫$B \to \bar{D}^0 \pi$▫ decays |
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| Authors: | ID Bloomfield, T. (Author)
ID Biswal, Jyoti Prakash (Author)
ID Bračko, Marko (Author)
ID Korpar, Samo (Author)
ID Križan, Peter (Author)
ID Pestotnik, Rok (Author)
ID Podobnik, Tomaž (Author)
ID Starič, Marko (Author)
ID Šantelj, Luka (Author) |
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| Files: |  Measurement_of_the_branching_f-Bloomfield-2022.pdf (506,19 KB)
MD5: 25553DC8BA892DFF09C5BEF1159F80FC
 https://journals.aps.org/prd/abstract/10.1103/PhysRevD.105.072007
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| Language: | English |
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| Work type: | Scientific work |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FKKT - Faculty of Chemistry and Chemical Engineering
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| Abstract: | 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. |
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| Keywords: | branching fraction, hadronic decays, particle decays, mesons, CP violation, precision measurements |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 01.01.2022 |
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| Year of publishing: | 2022 |
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| Number of pages: | str. 072007-1-072007-13 |
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| Numbering: | Vol. 105, no. 7 |
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| PID: | 20.500.12556/DKUM-85067  |
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| UDC: | 539.1 |
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| ISSN on article: | 2470-0010 |
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| COBISS.SI-ID: | 108761347 |
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| DOI: | 10.1103/PhysRevD.105.072007 |
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| Publication date in DKUM: | 17.08.2023 |
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| Views: | 533 |
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| Downloads: | 48 |
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| Metadata: |    |
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| Categories: | Misc.
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