Measurement of the ratio of branching fractions of the decays Λ b 0  → ψ(2S)Λ and Λ b 0  → J/ψΛ

C. J. G. Onderwater, LHCb Collaboration

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Abstract

Using pp collisions corresponding to 3 fb−1 integrated luminosity, recorded by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV, the ratio of branching fractionsB(Λ0b→ψ(2S)Λ)/B(Λ0b→J/ψΛ)=0.513±0.023(stat)±0.016(syst)±0.011(B)B(Λb0→ψ(2S)Λ)/B(Λb0→J/ψΛ)=0.513±0.023(stat)±0.016(syst)±0.011(B)is determined. The first uncertainty is statistical, the second is systematic and the third is due to the external branching fractions used.
Original languageEnglish
Article number126
Number of pages16
JournalJournal of High Energy Physics
Volume2019
Issue number3
DOIs
Publication statusPublished - Mar-2019

Keywords

  • B physics
  • Branching fraction
  • Flavor physics
  • Hadron-Hadron scattering (experiments)

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