Observation of the decay B+→ ψ(2S)φ(1020)K+ in pp collisions at √s=8 TeV

CMS Collaboration

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The decay B+→ ψ(2S) φ(1020)K+ is observed for the first time using data collected from pp collisions at √s=8 TeV by the CMS experiment at the LHC, corresponding to an integrated luminosity of 19.6fb−1. The branching fraction of this decay is measured, using the mode B+→ψ(2S)K+ as normalization, to be (4.0 ±0.4 (stat)±0.6 (syst)±0.2 (B)) ×10−6, where the third uncertainty is from the measured branching fraction of the normalization channel.
Original languageEnglish
Pages (from-to)66-86
Number of pages21
JournalPhysics Letters B
Publication statusPublished - 2017
Externally publishedYes


  • CMS
  • Physics
  • B physics
  • Rare B decays

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