Search for CP violation in D_(s)⁺\rightarrow K⁻K⁺K⁺ decays

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: 7
Год издания: 2023
Издательство: IOP Publishing
Местоположение издательства: [Bristol, UK], England
Первая страница: 067
DOI: 10.1007/JHEP07(2023)067
Аннотация: A search for direct CP violation in the Cabibbo-suppressed decay D+s→K−K+K+ and in the doubly Cabibbo-suppressed decay D+→K−K+K+ is reported. The analysis is performed with data collected by the LHCb experiment in proton-proton collisions at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 5.6 fb−1. The search is conducted by comparing the D+(s) and D−(s) Dalitz-plot distributions through a model-independent binned technique, based on fits to the K−K+K+ invariant-mass distributions, with a total of 0.97 (1.27) million D+s (D+) signal candidates. The results are given as p-values for the hypothesis of CP conservation and are found to be 13.3% for the D+s→K−K+K+ decay and 31.6% for the D+→K−K+K+ decay. No evidence for CP violation is observed in these decays.
Добавил в систему: Бережной Александр Викторович

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