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Measurement of the CKM angle γ using B±→DK± with D→K0Sπ+π− , K0SK+K− decaysстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
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Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 20 ноября 2020 г.
- 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: Journal of High Energy Physics
- Том: 2018
- Номер: 8
- Год издания: 2018
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- DOI: 10.1007/jhep08(2018)176
- Аннотация: A binned Dalitz plot analysis of B±→DK± decays, with D→K0Sπ+π− and D→K0SK+K−, is used to perform a measurement of the CP-violating observables x± and y±, which are sensitive to the Cabibbo-Kobayashi-Maskawa angle γ. The analysis is performed without assuming any D decay model, through the use of information on the strong-phase variation over the Dalitz plot from the CLEO collaboration. Using a sample of proton-proton collision data collected with the LHCb experiment in 2015 and 2016, and corresponding to an integrated luminosity of 2.0fb−1, the values of the CP violation parameters are found to be x−=(9.0±1.7±0.7±0.4)×10−2, y−=(2.1±2.2±0.5±1.1)×10−2, x+=(−7.7±1.9±0.7±0.4)×10−2, and y+=(−1.0±1.9±0.4±0.9)×10−2. The first uncertainty is statistical, the second is systematic, and the third is due to the uncertainty on the strong-phase measurements. These values are used to obtain γ=(87+11−12)∘, rB=0.086+0.013−0.014, and δB=(101±11)∘, where rB is the ratio between the suppressed and favoured B-decay amplitudes and δB is the corresponding strong-interaction phase difference. This measurement is combined with the result obtained using 2011 and 2012 data collected with the \lhcb experiment, to give γ=(80+10−9)∘, rB=0.080±0.011, and δB=(110±10)∘.
- Добавил в систему: Бережной Александр Викторович