Measurement of relative branching fractions of B decays to psi(2S) and J/psi mesons

R Aaij, J.F.J. van den Brand, F. Dettori, T.J. Ketel, R. Koopman, R.W. Lambert, H.G. Raven, M. Schiller, S. Tolk, Collaboration LHCb

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

The relative rates of B-meson decays into J/ψ and ψ(2S) mesons are measured for the three decay modes in pp collisions recorded with the LHCb detector. The ratios of branching fractions (B) are measured to be B(B+ → ψ(2S)K+)/B(B+ → J/ψK+) = 0.594 ± 0.006(stat) ± 0.016(syst) ± 0.015(R<inf>ψ</inf>), B(B0 → ψ(2S)K*0)/B(B0 → J/ψK*0) = 0.476 ± 0.014(stat) ± 0.010(syst) ± 0.012(R<inf>ψ</inf>), B(B0<inf>s</inf> →ψ(2S)φ)/B(B0<inf>s</inf> →J/ψφ) = 0.489 ± 0.026(stat) ± 0.021(syst) ± 0.012(R<inf>ψ</inf>), where the third uncertainty is from the ratio of the ψ(2S) and J/ψ branching fractions to μ+ μ.
Original languageEnglish
Article number2118
JournalEuropean Physical Journal C. Particles and Fields
Volume72
Issue number8
DOIs
Publication statusPublished - 2012

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