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(Rψ), B(B0→ψ(2S)K∗0)B(B0→J/ψK∗0)=0.476±0.014(stat)±0.010(syst)±0.012(Rψ), B0s(B0s→ψ(2S)ϕ)B(B0s→J/ψϕ)=0.489±0.026(stat)±0.021(syst)±0.012(Rψ) where the third uncertainty is from the ratio of the ψ(2S) and J/ψ branching fractions to μμ.

Aaij, R., Beteta, C., Adametz, A., Adeva, B., Adinolfi, M., Adrover, C., et al. (2012). Measurement of relative branching fractions of B decays to psi(2S) and J/psi mesons. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 72(8), -- [10.1140/epjc/s10052-012-2118-7].

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

Archilli, F;CARBONI, GIOVANNI;SANTOVETTI, EMANUELE;
2012-01-01

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(Rψ), B(B0→ψ(2S)K∗0)B(B0→J/ψK∗0)=0.476±0.014(stat)±0.010(syst)±0.012(Rψ), B0s(B0s→ψ(2S)ϕ)B(B0s→J/ψϕ)=0.489±0.026(stat)±0.021(syst)±0.012(Rψ) where the third uncertainty is from the ratio of the ψ(2S) and J/ψ branching fractions to μμ.
2012
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE
English
Con Impact Factor ISI
Aaij, R., Beteta, C., Adametz, A., Adeva, B., Adinolfi, M., Adrover, C., et al. (2012). Measurement of relative branching fractions of B decays to psi(2S) and J/psi mesons. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 72(8), -- [10.1140/epjc/s10052-012-2118-7].
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