Observation of the annihilation decay mode $B^0\to K^+K^-$статья

Статья опубликована в высокорейтинговом журнале

Информация о цитировании статьи получена из Scopus, Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 20 мая 2017 г.
• Авторы:
• Журнал: Physical Review Letters
• Том: 118
• Номер: 8
• Год издания: 2017
• Издательство: American Physical Society
• Местоположение издательства: United States
• Первая страница: 081801
• DOI: 10.1103/PhysRevLett.118.081801
• Аннотация: A search for the B0→K+K− decay is performed using pp-collision data collected by LHCb. The data set corresponds to integrated luminosities of 1 and 2 fb−1 at center-of-mass energies of 7 and 8 TeV, respectively. This decay is observed for the first time, with a significance of more than five standard deviations. The analysis also results in an improved measurement of the branching fraction for the B0s→π+π− decay. The measured branching fractions are BR(B0→K+K−)=(7.80±1.27±0.81±0.21)×10−8 and BR(B0s→π+π−)=(6.91±0.54±0.63±0.19±0.40)×10−7. The first uncertainty is statistical, the second is systematic, the third is due to the uncertainty on the B0→K+π− branching fraction used as a normalization. For the B0s mode, the fourth accounts for the uncertainty on the ratio of the probabilities for b quarks to hadronize into B0s and B0 mesons.
• Добавил в систему: Бережной Александр Викторович

Работа с статьей

 [1] Observation of the annihilation decay mode b0→k+k- / А. В. Бережной, И. В. Горелов, А. Д. Козачук et al. // Physical Review Letters. — 2017. — Vol. 118, no. 8. — P. 081801. A search for the B0→K+K− decay is performed using pp-collision data collected by LHCb. The data set corresponds to integrated luminosities of 1 and 2 fb−1 at center-of-mass energies of 7 and 8 TeV, respectively. This decay is observed for the first time, with a significance of more than five standard deviations. The analysis also results in an improved measurement of the branching fraction for the B0s→π+π− decay. The measured branching fractions are BR(B0→K+K−)=(7.80±1.27±0.81±0.21)×10−8 and BR(B0s→π+π−)=(6.91±0.54±0.63±0.19±0.40)×10−7. The first uncertainty is statistical, the second is systematic, the third is due to the uncertainty on the B0→K+π− branching fraction used as a normalization. For the B0s mode, the fourth accounts for the uncertainty on the ratio of the probabilities for b quarks to hadronize into B0s and B0 mesons. [ DOI ]