Measurement and interpretation of moments in inclusive semileptonic decays B[bar]→Xcℓ−ν[bar]
We present results for the moments of observed spectra in inclusive semileptonic B-meson decays to charm hadrons B[bar]→Xcℓ−ν[bar]. Moments of the hadronic-mass and the combined mass-and-energy spectra for different minimum electron or muon momenta between 0.8 and 1.9 GeV/c are obtained from a sampl...
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| Main Authors: | , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
19 February 2010
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| In: |
Physical review. D, Particles, fields, gravitation, and cosmology
Year: 2010, Volume: 81, Issue: 3, Pages: 1-25 |
| ISSN: | 1550-2368 |
| DOI: | 10.1103/PhysRevD.81.032003 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.81.032003 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.81.032003 
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| Author Notes: | B. Aubert, J. Marks, S. Schenk, U. Uwer [und 493 weitere Personen] |
| Summary: | We present results for the moments of observed spectra in inclusive semileptonic B-meson decays to charm hadrons B[bar]→Xcℓ−ν[bar]. Moments of the hadronic-mass and the combined mass-and-energy spectra for different minimum electron or muon momenta between 0.8 and 1.9 GeV/c are obtained from a sample of 232×106 Υ(4S)→BB[bar] events, collected with the BABAR detector at the PEP-II asymmetric-energy B-meson factory at SLAC. We also present a reevaluation of the moments of electron-energy spectra and partial decay fractions B(B[bar]→Xce−ν[bar]) for minimum electron momenta between 0.6 and 1.5 GeV/c based on a sample of 51×106 Υ(4S)→BB[bar] events. The measurements are used for the extraction of the total decay fraction, the Cabibbo-Kobayashi-Maskawa (CKM) matrix element |Vcb|, the quark masses mb and mc, and four heavy-quark QCD parameters in the framework of a Heavy-Quark Expansion (HQE). We find B(B[bar]→Xcℓ−ν[bar])=(10.64±0.17±0.06)% and |Vcb|=(42.05±0.45±0.70)×10−3. |
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| Item Description: | Gesehen am 28.11.2022 Im Titel steht der Buchstabe B sowie der Buchstabe v mit einem Oberstrich Im Titel ist der Buchstabe c tiefgestellt Im Titel ist der Minuszeichen hochgestellt |
| Physical Description: | Online Resource |
| ISSN: | 1550-2368 |
| DOI: | 10.1103/PhysRevD.81.032003 |