Relative rates of \u3ci\u3eB\u3c/i\u3e meson decays into ψ(2\u3ci\u3eS\u3c/i\u3e) and \u3ci\u3eJ\u3c/i\u3e/ψ mesons

We report on a study of the relative rates of B meson decays into ψ(2S) and J/ψ mesons using 1.3 fb-1 of pp collisions at √s = 1.96 TeV recorded by the D0 detector operating at the Fermilab Tevatron Collider. We observe the channels B0s → ψ(2S)φ, B0s → J/ψφ, B± → ψ(2S)K±, and B± → i\u3eJ/ψK± and we measure the relative branching fractions for these channels to be (B(Bs0 → ψ(2S)φ))/(B(Bs0 → J/ψφ)) = 0.53 ± 0.10 (stat) ± 0.07 (syst) ± 0.06 (B), (B(B± → ψ(2S)K±))/(B(B± → J/ψK±) = 0.63 ± 0.05(stat) ± 0.03(syst) ± 0.07 (B), where the final error corresponds to the uncertainty in the J/ψ and ψ(2S) branching ratio into two muons