Observation of the $B_s^0 \rightarrow J/ψ φ φ$ decayстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 19 декабря 2016 г.
Аннотация:The B0s→J/ψϕϕ decay is observed in pp collision data corresponding to an integrated luminosity of 3 fb−1 recorded by the LHCb detector at centre-of-mass energies of 7 TeV and 8 TeV. This is the first observation of this decay channel, with a statistical significance of 15 standard deviations. The mass of the B0s meson is measured to be 5367.08±0.38±0.15 MeV/c2. The branching fraction ratio B(B0s→J/ψϕϕ)/B(B0s→J/ψϕ) is measured to be 0.0115±0.0012+0.0005−0.0009. In both cases, the first uncertainty is statistical and the second is systematic. No evidence for non-resonant B0s→J/ψϕK+K− or B0s→J/ψK+K−K+K− decays is found.