## Measurement of the phase difference between short- and long-distance amplitudes in the $B^+\to K^+μ^+μ^-$ decayстатья

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: European Physical Journal C
• Том: 77
• Номер: 161
• Год издания: 2017
• Издательство: Springer Verlag
• Местоположение издательства: Germany
• Первая страница: 1
• Последняя страница: 15
• DOI: 10.1140/epjc/s10052-017-4703-2
• Аннотация: A measurement of the phase difference between the short- and long-distance contributions to the B+→K+μ+μ− decay is performed by analysing the dimuon mass distribution. The analysis is based on pp collision data corresponding to an integrated luminosity of 3 fb−1 collected by the LHCb experiment in 2011 and 2012. The long-distance contribution to the B+→K+μ+μ− decay is modelled as a sum of relativistic Breit--Wigner amplitudes representing different vector meson resonances decaying to muon pairs, each with their own magnitude and phase. The measured phases of the J/ψ and ψ(2S) resonances are such that the interference with the short-distance component in dimuon mass regions far from their pole masses is small. In addition, constraints are placed on the Wilson coefficients, C9 and C10, and the branching fraction of the short-distance component is measured.
• Добавил в систему: Бережной Александр Викторович

### Работа с статьей

 [1] Measurement of the phase difference between short- and long-distance amplitudes in the b+→k+μ+μ- decay / А. В. Бережной, И. В. Горелов, А. Д. Козачук et al. // European Physical Journal C. — 2017. — Vol. 77, no. 161. — P. 1–15. A measurement of the phase difference between the short- and long-distance contributions to the B+→K+μ+μ− decay is performed by analysing the dimuon mass distribution. The analysis is based on pp collision data corresponding to an integrated luminosity of 3 fb−1 collected by the LHCb experiment in 2011 and 2012. The long-distance contribution to the B+→K+μ+μ− decay is modelled as a sum of relativistic Breit–Wigner amplitudes representing different vector meson resonances decaying to muon pairs, each with their own magnitude and phase. The measured phases of the J/ψ and ψ(2S) resonances are such that the interference with the short-distance component in dimuon mass regions far from their pole masses is small. In addition, constraints are placed on the Wilson coefficients, C9 and C10, and the branching fraction of the short-distance component is measured. [ DOI ]