Résumé
We report a measurement of the exclusive B+ meson decay to the Ds(*)-K+π+ final state using 657×106BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We use Ds*-→Ds-γ and the Ds-→ π-, K̄*(892)0K- and KS0K- decay modes for Ds(*) reconstruction and measure the following branching fractions: B(B+→Ds-K+π+)=(1.71-0.07+0. 08(stat)-0.20+0.20(syst)±0.15(Bint))×10-4 and B(B+→Ds*- K+π+)=(1.31-0.12+0.13(stat)-0.25+0.25(syst)±0.12(Bint))×10-4. The uncertainties are due to statistics, experimental systematic errors, and uncertainties of intermediate branching fractions, respectively.
| langue originale | Anglais |
|---|---|
| Numéro d'article | 052005 |
| journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 80 |
| Numéro de publication | 5 |
| Les DOIs | |
| état | Publié - 17 sept. 2009 |
| Modification externe | Oui |
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