Observation of Ds+ K- and evidence for Ds+ pi- final states in neutral B decays
| dc.creator | Krokovny, P. | |
| dc.creator | Collaboration, The Belle | |
| dc.date | 2002-07-25 | |
| dc.date | 2002-10-16 | |
| dc.date.accessioned | 2026-07-07T12:01:49Z | |
| dc.date.available | 2026-07-07T12:01:49Z | |
| dc.description | We report the first observation of a B meson decay that is not accessible by a direct spectator process. The channel B0bar -> Ds+ K- is found in a sample of 85 timse 10^6 B Bbar events, collected with the Belle detector at KEKB, with a branching fraction Br(B0bar -> Ds+ K-)=(4.6^{+1.2}_{-1.1} +- 1.3) times 10^{-5}. We also obtain evidence for the B0 -> Ds+ pi- decay with branching fraction Br(B0 -> Ds+ pi-)=(2.4^{+1.0}_{-0.8} +- 0.7) times 10^{-5}. This value may be used to extract a model-dependent value of |Vub|. | |
| dc.description | Accepted to publication in Phys. Rev. Lett | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0207077 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0207077 | |
| dc.identifier | Phys.Rev.Lett.89:231804,2002 | |
| dc.identifier | doi:10.1103/PhysRevLett.89.231804 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/207224 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Observation of Ds+ K- and evidence for Ds+ pi- final states in neutral B decays | |
| dc.type | text |