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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/186437
Resonances and CP violation in B s 0 and {\overline{B}}_s^0\to J/ψ {K}+{K}- decays in the mass region above the ϕ(1020)
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The decays of B s 0 and {\overline{B}}_s^0 mesons into the J/ψK + K - final state are studied in the K + K - mass region above the ϕ(1020) meson in order to determine the resonant substructure and measure the CP-violating phase, ϕ s , the decay width, Γ s , and the width difference between light and heavy mass eigenstates, ΔΓ s . A decay-time dependent amplitude analysis is employed. The data sample corresponds to an integrated luminosity of 3 fb-1 produced in 7 and 8 TeV pp collisions at the LHC, collected by the LHCb experiment. The measurement determines ϕ s = 119 ± 107 ± 34 mrad. A combination with previous LHCb measurements using similar decays into the J/ψπ + π - and J/ψϕ(1020) final states gives ϕ s = 1 ± 37 mrad, consistent with the Standard Model prediction.
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CAMBONI, Alessandro, et al. Resonances and CP violation in B s 0 and {\overline{B}}_s^0\to J/ψ {K}+{K}- decays in the mass region above the ϕ(1020). Journal of High Energy Physics. 2017. Vol. 2017, num. 37, pags. 1-28. ISSN 1126-6708. [consulted: 10 of September of 2026]. Available at: https://hdl.handle.net/2445/186437