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Measurement of the relative branching fractions of B̅ →D/D*/D**l-ν̅ l decays in events with a fully reconstructed B meson
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BaBar Collaboration (Including:
). (2007) Measurement of the relative branching fractions of B̅ →D/D*/D**l-ν̅ l decays in events with a fully reconstructed B meson. Physical Review D, Vol.76 (No.5). Article: 051101. ISSN 1550-7998 Full text not available from this repository.
Official URL: http://dx.doi.org/10.1103/PhysRevD.76.051101
Abstract
We determine the relative branching fractions of semileptonic B decays to charmed final states. The measurement is performed on the recoil from a fully reconstructed B meson in a sample of 362x10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the BABAR detector. A simultaneous fit to a set of discriminating variables is performed on a sample of (B) over bar -> DXl(-) (v) over bar center dot decays to determine the contributions from the different channels. We measure Gamma(B--> Dl(-)(v)over bar>l)/Gamma(B--> DXl(-)(v) over barl)=0.227 +/- 0.014 +/- 0.016, Gamma(B--> D(*)l (v) over barl)/Gamma(B--> DXl(-)(v) over barl)=0.582 +/- 0.018 +/- 0.030, and Gamma(B--> D(**)l(-)(v) over barl)/Gamma(B--> DXl(-)(v) over barl)=0.191 +/- 0.013 +/- 0.019 for the charged B sample, and Gamma((B) over bar (0)-> Dl(-)(v) over barl)/Gamma((B) over bar (0)-> DXl(-)(v) over barl)=0.215 +/- 0.016 +/- 0.013, Gamma((B) over bar (0)-> D(*)l(-)(v) over barl)/Gamma((B) over bar (0)-> DXl(-)(v) over barl)=0.537 +/- 0.031 +/- 0.036, and Gamma((B) over barB(0)-> D(**)l(-)(v) over barl)/Gamma((B) over bar (0)-> DXl(-)(v) over barl)=0.248 +/- 0.032 +/- 0.030 for the neutral B sample, where uncertainties are statistical and systematic, respectively.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
| Divisions: | Faculty of Science > Physics |
| Journal or Publication Title: | Physical Review D |
| Publisher: | American Physical Society |
| ISSN: | 1550-7998 |
| Date: | September 2007 |
| Volume: | Vol.76 |
| Number: | No.5 |
| Number of Pages: | 8 |
| Page Range: | Article: 051101 |
| Identification Number: | 10.1103/PhysRevD.76.051101 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Restricted or Subscription Access |
| URI: | http://wrap.warwick.ac.uk/id/eprint/31144 |
Data sourced from Thomson Reuters' Web of Knowledge
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