Observation of the Decay B−→D(*)+sK−ℓ−ν[bar]ℓ
We report the observation of the decay B−→D(*)+sK−ℓ−ν[bar]ℓ based on 342 fb−1 of data collected at the Υ(4S) resonance with the BABAR detector at the PEP-II e+e− storage rings at SLAC. A simultaneous fit to three D+s decay chains is performed to extract the signal yield from measurements of the squa...
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| Main Authors: | , , , |
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| Corporate Author: | |
| Format: | Article (Journal) |
| Language: | English |
| Published: |
22 July 2011
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| In: |
Physical review letters
Year: 2011, Volume: 107, Issue: 4, Pages: 1-8 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.107.041804 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.107.041804 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.107.041804 
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| Author Notes: | BABAR Collaboration* |
| Summary: | We report the observation of the decay B−→D(*)+sK−ℓ−ν[bar]ℓ based on 342 fb−1 of data collected at the Υ(4S) resonance with the BABAR detector at the PEP-II e+e− storage rings at SLAC. A simultaneous fit to three D+s decay chains is performed to extract the signal yield from measurements of the squared missing mass in the B meson decay. We observe the decay B−→D(*)+sK−ℓ−ν[bar]ℓ with a significance greater than 5 standard deviations (including systematic uncertainties) and measure its branching fraction to be B(B−→D(*)+sK−ℓ−ν[bar]ℓ)=[6.13+1.04−1.03(stat)±0.43(syst)±0.51(B(Ds))]×10−4, where the last error reflects the limited knowledge of the Ds branching fractions. |
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| Item Description: | *BABAR Collaboration: P. del Amo Sanchez, J. Marks, S. Schenk, U. Uwer [und 442 weitere Personen] Im Titel sind die Plus- und Minuszeichen hochgestellt Im Titel ist der Ausdruck "(*)" hochgestellt Im Titel ist der Buchstabe s tiefgestellt Im Titel steht der Buchstabe ν (nu) mit einem Oberstrich Gesehen am 06.10.2022 |
| Physical Description: | Online Resource |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.107.041804 |