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Title: | Observation of B+ → ρ+K0 and measurement of its branching fraction and charge asymmetry |
Author: | Garra Ticó, Jordi Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 9-Jul-2007 |
Publisher: | American Physical Society |
Abstract: | We present the first observation of the decay B + → ρ + K 0 , using a data sample of 348 fb − 1 collected at the Υ ( 4 S ) resonance with the BABAR detector. The branching fraction and charge asymmetry are measured to be ( 8.0 + 1.4 − 1.3 ± 0.6 ) × 10 − 6 and ( − 12.2 ± 16.6 ± 2.0 ) % , respectively, where the first uncertainty is statistical and the second is systematic. The charge asymmetry is defined by A ch = ( Γ B − − Γ B + ) / ( Γ B − + Γ B + ) with Γ B ± the B ± decay rate. The significance of the observed branching fraction, including systematic uncertainties, is 7.9 standard deviations. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.76.011103 |
It is part of: | Physical Review D, 2007, vol. 76, num. 1, p. 011103(R) |
URI: | http://hdl.handle.net/2445/131453 |
Related resource: | https://doi.org/10.1103/PhysRevD.76.011103 |
ISSN: | 1550-7998 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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