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

0335012 - FZÚ 2010 RIV US eng J - Journal Article
Abazov, V. M. - Abbott, B. - Abolins, M. - Kupčo, Alexander - Lokajíček, Miloš … Total 529 authors
Relative rates of B meson decays into psi(2S) and J/psi mesons.ptonic decay channel.
[Relativní četnosti rozpadů B mesonů na psi(2S) a J/psi.]
Physical Review D: Particles, Fields, Gravitation and Cosmology. Roč. 79, č. 11 (2009), 111102/1-111102/6. ISSN 1550-7998
R&D Projects: GA MŠMT LC527; GA MŠMT LA08047
Institutional research plan: CEZ:AV0Z10100502
Keywords : tevatron * D0 * B meson * muon
Subject RIV: BF - Elementary Particles and High Energy Physics
Impact factor: 4.922, year: 2009
http://link.aps.org/doi/10.1103/PhysRevD.79.111102

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 pbar p collisions at sqrt(s) = 1.96 TeV recorded by the D0 detector operating at the Fermilab Tevatron Collider. We observe the channels B^0_s -> psi(2S)phi, B^0_s -> 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^0_s -> psi(2S)phi)/B(B^0_s -> J/psi phi) = 0.55 +/- 0.11 (stat) +/- 0.07 (syst) +/- 0.06 (B), B(B^+/- -> psi(2S) K^+/-)/B(B^+/- -> J/psi K^+/-) = 0.65 +/- 0.04 (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.

Prezentujeme studii relativních četností rozpadů B mesonů na psi(2S) a J/psi s použitím 1.3 fb-1 dat z D0.
Permanent Link: http://hdl.handle.net/11104/0179602