Relative rates of B meson decays into psi(2S) and J/psi mesons

Resumo

We report on a study of the relative rates of B meson decays into psi(2S) and J/psi mesons using 1.3 fb(-1) of p (p) over bar collisions at root s = 1.96 TeV recorded by the D0 detector operating at the Fermilab Tevatron Collider. We observe the channels B(s)(0) -> psi(2S)phi, B(s)(0) -> J/psi phi, B(+/-) -> psi(2S)K(+/-), and B(+/-) -> J/psi K(+/-) and we measure the relative branching fractions for these channels to be B(B(s)(0) -> psi(2S)phi)/B(B(s)(0) -> J/psi phi)=0.53 +/- 0.10(stat)+/- 0.07(syst)+/- 0.06(B), B(B(+) -> psi(2S)K(+))/B(B(+) -> J/psi K(+))=0.63 +/- 0.05(stat)+/- 0.03(syst)+/- 0.07(B), where the final error corresponds to the uncertainty in the J/psi and psi(2S) branching ratio into two muons.

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Como citar

Physical Review D. College Pk: Amer Physical Soc, v. 79, n. 11, p. 7, 2009.