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Observation of the decay B0s→D¯¯¯¯0K+K−статья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Бережной А.В., Горелов И.В., Лефлат А.К., Никитин Н.В., Саврина Д.В., Волков В.Ю., Жуков В.Ю., Данилина А.В., LHCb Collaboration
- Журнал: Physical Review D
- Том: 98
- Номер: 7
- Год издания: 2018
- Издательство: American Physical Society
- Местоположение издательства: United States
- DOI: 10.1103/physrevd.98.072006
- Аннотация: The first observation of the B0s→D¯¯¯¯0K+K− decay is reported, together with the most precise branching fraction measurement of the mode B0→D¯¯¯¯0K+K−. The results are obtained from an analysis of pp collision data corresponding to an integrated luminosity of 3.0fb−1. The data were collected with the LHCb detector at centre-of-mass energies of 7 and 8 TeV. The branching fraction of the B0→D¯¯¯¯0K+K− decay is measured relative to that of the decay B0→D¯¯¯¯0π+π− to be B(B0→D¯¯¯¯0K+K−)B(B0→D¯¯¯¯0π+π−)=(6.9±0.4±0.3)%, where the first uncertainty is statistical and the second is systematic. The measured branching fraction of the B0s→D¯¯¯¯0K+K− decay mode relative to that of the corresponding B0 decay is B(B0s→D¯¯¯¯0K+K−)B(B0→D¯¯¯¯0K+K−)=(93.0±8.9±6.9)%. Using the known branching fraction of B0→D¯¯¯¯0π+π−, the values of B(B0→D¯¯¯¯0K+K−)=(6.1±0.4±0.3±0.3)×10−5, and B(B0s→D¯¯¯¯0K+K−)= (5.7±0.5±0.4±0.5)×10−5 are obtained, where the third uncertainties arise from the branching fraction of the decay modes B0→D¯¯¯¯0π+π− and B0→D¯¯¯¯0K+K−, respectively.
- Добавил в систему: Бережной Александр Викторович