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Amplitude analysis of B[superscript +] → J/ψϕK[superscript +] decays

Author(s)
Boettcher, Thomas Julian; Ilten, Philip J; Williams, Michael
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Abstract
The first full amplitude analysis of B[superscript +]→J/ψφK[superscript +] with J/ψ→μ[superscript +]μ[superscript -], φ→K[superscript +]K[superscript -] decays is performed with a data sample of 3 fb[superscript -1] of pp collision data collected at √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 φK[superscript +], and four J/ψφ 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)[superscript +]→φK[superscript +] transition.
Date issued
2016-06
URI
http://hdl.handle.net/1721.1/118782
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Physical Review D
Publisher
American Physical Society (APS)
Citation
Aaij, R., et al. “Amplitude Analysis of B[superscript +] → J/ψϕK[superscript +] Decays.” Physical Review D, vol. 95, no. 1, Jan. 2017. © 2017 CERN, for the LHCb Collaboration
Version: Final published version
ISSN
2470-0010
2470-0029

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