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

Eur Phys J C Part Fields. 2012;72(8):2118. doi: 10.1140/epjc/s10052-012-2118-7. Epub 2012 Aug 29.

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 ([Formula: see text]) are measured to be [Formula: see text] where the third uncertainty is from the ratio of the ψ(2S) and J/ψ branching fractions to μ+μ-.