Observation of the decay Bc+ → J/ψK +K-π+

The LHCb Collaboration

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The decay Bc+ → J/ψK+K -π+ is observed for the first time, using proton-proton collisions collected with the LHCb detector corresponding to an integrated luminosity of 3 fb-1. A signal yield of 78 ± 14 decays is reported with a significance of 6.2 standard deviations. The ratio of the branching fraction of Bc+ → J/ψK +K-π+ decays to that of Bc + → J/ψπ+ decays is measured to be 0:53 ± 0:10 ± 0:05, where the first uncertainty is statistical and the second is systematic. Copyright CERN.

Original languageEnglish
Article number94
Number of pages16
JournalJournal of High Energy Physics
Issue number11
Publication statusPublished - 12 Nov 2013
Externally publishedYes


  • B physics
  • Branching fraction
  • Flavor physics
  • Hadron-Hadron scattering

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