Measurement of the absolute branching fractions for D−s→ℓ−v̄ℓ and extraction of the decay constant fDs
The absolute branching fractions for the decays D−s→ℓ−¯νℓ (ℓ=e, μ, or τ) are measured using a data sample corresponding to an integrated luminosity of 521 fb−1 collected at center-of-mass energies near 10.58 GeV with the BABAR detector at the PEP-II e+e− collider at SLAC. The number of D−s mesons is...
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| Hauptverfasser: | , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
10 November 2010
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| In: |
Physical review. D, Particles, fields, gravitation, and cosmology
Year: 2010, Jahrgang: 82, Heft: 9, Pages: 1-8 |
| ISSN: | 1550-2368 |
| DOI: | 10.1103/PhysRevD.82.091103 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.82.091103 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.82.091103 
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| Verfasserangaben: | BABAR Collaboration |
| Zusammenfassung: | The absolute branching fractions for the decays D−s→ℓ−¯νℓ (ℓ=e, μ, or τ) are measured using a data sample corresponding to an integrated luminosity of 521 fb−1 collected at center-of-mass energies near 10.58 GeV with the BABAR detector at the PEP-II e+e− collider at SLAC. The number of D−s mesons is determined by reconstructing the recoiling system DKXγ in events of the type e+e−→DKXD*−s, where D*−s→D−sγ and X represents additional pions from fragmentation. The D−s→ℓ−νℓ events are detected by full or partial reconstruction of the recoiling system DKXγℓ. The branching fraction measurements are combined to determine the D−s decay constant fDs=(258.6±6.4±7.5) MeV, where the first uncertainty is statistical and the second is systematic. |
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| Beschreibung: | Gesehen am 23.08.2023 Im Titel ist "function" als mathematisches Zeichen dargestellt Im Titel steht der Buchstabe "v" mit einem Oberstrich BABAR Collaboration: P. del Amo Sanchez, A. Adametz, J. Marks, U. Uwer, T. Hartmann, T. Leddig, H. Schröder, R. Waldi [und viele weitere] |
| Beschreibung: | Online Resource |
| ISSN: | 1550-2368 |
| DOI: | 10.1103/PhysRevD.82.091103 |