## Observation of the decay $B_s^0 \to η_c φ$ and evidence for $B_s^0 \to η_c π^+ π^-$статья

Статья опубликована в высокорейтинговом журнале

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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 21 августа 2017 г.
• Авторы:
• Журнал: Journal of High Energy Physics
• Том: 7
• Год издания: 2017
• Издательство: Institute of Physics Publishing
• Местоположение издательства: United Kingdom
• Первая страница: 021
• DOI: 10.1007/JHEP07(2017)021
• Аннотация: A study of B0s→ηcϕ and B0s→ηcπ+π− decays is performed using pp collision data corresponding to an integrated luminosity of 3.0fb−1, collected with the LHCb detector in Run 1 of the LHC. The observation of the decay B0s→ηcϕ is reported, where the ηc meson is reconstructed in the pp¯, K+K−π+π−, π+π−π+π− and K+K−K+K− decay modes and the ϕ(1020) in the K+K− decay mode. The decay B0s→J/ψϕ is used as a normalisation channel. Evidence is also reported for the decay B0s→ηcπ+π−, where the ηc meson is reconstructed in the pp¯ decay mode, using the decay B0s→J/ψπ+π− as a normalisation channel. The measured branching fractions are B(B0s→ηcϕ)B(B0s→ηcπ+π−)==(5.01±0.53±0.27±0.63)×10−4,(1.76±0.59±0.12±0.29)×10−4, where in each case the first uncertainty is statistical, the second systematic and the third uncertainty is due to the limited knowledge of the external branching fractions.
• Добавил в систему: Бережной Александр Викторович

### Работа с статьей

 [1] Observation of the decay b_s0 →η_c φ and evidence for b_s0 →η_c π+ π-  / А. В. Бережной, И. В. Горелов, А. Д. Козачук et al. // Journal of High Energy Physics. — 2017. — Vol. 7. — P. 021. A study of B0s→ηcϕ and B0s→ηcπ+π− decays is performed using pp collision data corresponding to an integrated luminosity of 3.0fb−1, collected with the LHCb detector in Run 1 of the LHC. The observation of the decay B0s→ηcϕ is reported, where the ηc meson is reconstructed in the pp¯, K+K−π+π−, π+π−π+π− and K+K−K+K− decay modes and the ϕ(1020) in the K+K− decay mode. The decay B0s→J/ψϕ is used as a normalisation channel. Evidence is also reported for the decay B0s→ηcπ+π−, where the ηc meson is reconstructed in the pp¯ decay mode, using the decay B0s→J/ψπ+π− as a normalisation channel. The measured branching fractions are B(B0s→ηcϕ)B(B0s→ηcπ+π−)==(5.01±0.53±0.27±0.63)×10−4,(1.76±0.59±0.12±0.29)×10−4, where in each case the first uncertainty is statistical, the second systematic and the third uncertainty is due to the limited knowledge of the external branching fractions. [ DOI ]