Searches for Bs0 → J/ψpp̄ and B + → J/ψ pp̄ π+ decays

The LHCb Collaboration

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Abstract

The results of searches for Bs0 → J/ψ ppmacr; and B + → J/ψ pp̄ π+ decays are reported. The analysis is based on a data sample, corresponding to an integrated luminosity of 1.0 fb-1 of pp collisions, collected with the LHCb detector. An excess with 2.8 σ significance is seen for the decay B s0 → J/ψ ppmacr; and an upper limit on the branching fraction is set at the 90 % confidence level: B0 → J/ψ ppmacr; < 4.8 × 10-6, which is the first such limit. No significant signals are seen for B 0 → J/ψ pp̄ and B + → J/ψ pp̄ π + decays, for which the corresponding limits are set: B0 → J/ψ ppmacr; and B + → J/ψ pp̄ π+ < 5.2 × 10 -7, which significantly improves the existing limit; and B(B + → J/ψpp̄ π+)< 5.0 × 10 -7, which is the first limit on this branching fraction.

Original languageEnglish
Article number6
Number of pages18
JournalJournal of High Energy Physics
Volume2013
Issue number9
DOIs
Publication statusPublished - 2 Sep 2013
Externally publishedYes

Keywords

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

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