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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/186418
Amplitude analysis of B+ -> J/psi phi K+ decays
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The first full amplitude analysis of B+ -> J/psi phi K+ with J/psi -> mu(+)mu(-), phi -> K+K- decays is performed with a data sample of 3 fb(-1) of pp collision data collected at root s = 7 and 8 TeV with the LHCb detector. The data cannot be described by a model that contains only excited kaon states decaying into phi K+, and four J/psi phi structures are observed, each with significance over 5 standard deviations. The quantum numbers of these structures are determined with significance of at least 4 standard deviations. The lightest has mass consistent with, but width much larger than, previous measurements of the claimed X(4140) state. The model includes significant contributions from a number of expected kaon excitations, including the first observation of the K*(1680)+ -> phi K+ transition.
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GARRIDO BELTRÁN, Lluís, et al. Amplitude analysis of B+ -> J/psi phi K+ decays. Physical Review D. 2017. Vol. 95, num. 012002, pags. 1-28. ISSN 2470-0010. [consulted: 10 of June of 2026]. Available at: https://hdl.handle.net/2445/186418