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Evidence for the decays B^0→ øverlineD ⁽*)0\ensuremathφ and updated measurements of the branching fractions of the B_s^0 → øverlineD ⁽*)0\ensuremathφ decaysстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Бережной А.В., Горелов И.В., Данилина А.В., Козачук А.Д., Лефлат А.К., Никитин Н.В., Саврина Д.В., Соломин А.Н., Волков В.Ю., Жуков В.Ю., Королев М.Г., LHCb Collaboration
- Журнал: Journal of High Energy Physics
- Том: 10
- Год издания: 2023
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- Первая страница: 123
- DOI: 10.1007/JHEP10(2023)123
- Аннотация: Evidence for the decays B00→D‾0D0ϕ and B00→D‾∗0D∗0ϕ is reported with a significance of 3.6 σ and 4.3 σ, respectively. The analysis employs pp collision data at centre-of-mass energies ss = 7, 8 and 13 TeV collected by the LHCb detector and corresponding to an integrated luminosity of 9 fb−1−1. The branching fractions are measured to beB(B0→D‾0ϕ)=(7.7±2.1±0.7±0.7)×10−7,B(B0→D‾∗0ϕ)=(2.2±0.5±0.2±0.2)×10−6.B(B0→D0ϕ)=(7.7±2.1±0.7±0.7)×10−7,B(B0→D∗0ϕ)=(2.2±0.5±0.2±0.2)×10−6.In these results, the first uncertainty is statistical, the second systematic, and the third is related to the branching fraction of the B00→D‾0D0K++K−− decay, used for normalisation. By combining the branching fractions of the decays B00 → D‾(∗)0ϕD(∗)0ϕ and B00 → D‾(∗)0ωD(∗)0ω, the ω-ϕ mixing angle δ is constrained to be tan22δ = (3.6 ± 0.7 ± 0.4) × 10−3−3, where the first uncertainty is statistical and the second systematic. An updated measurement of the branching fractions of the Bs0Bs0 → D‾(∗)0ϕD(∗)0ϕ decays, which can be used to determine the CKM angle γ, leads toB(Bs0→D‾0ϕ)=(2.30±0.10±0.11±0.20)×10−5,B(Bs0→D‾∗0ϕ)=(3.17±0.16±0.17±0.27)×10−5.B(Bs0→D0ϕ)=(2.30±0.10±0.11±0.20)×10−5,B(Bs0→D∗0ϕ)=(3.17±0.16±0.17±0.27)×10−5.
- Добавил в систему: Бережной Александр Викторович