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Measurement of the branching fraction of Upsilon(4S)->(BB0)-B-0
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UNSPECIFIED (2005) Measurement of the branching fraction of Upsilon(4S)->(BB0)-B-0. PHYSICAL REVIEW LETTERS, 95 (4). -. doi:10.1103/PhysRevLett.95.042001
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.95.042001
Abstract
We report the first measurement of the branching fraction f(00) for Upsilon(4S) -> B-0(B) over bar (0). The data sample consists of 81.7 fb(-1) collected at the Upsilon(4S) resonance with the BABAR detector at the SLAC PEP-II asymmetric-energy e(+)e(-) storage ring. Using partial reconstruction of the decay (B) over bar (0) -> D(*+)l(-)<(nu)over bar >(l) in which only the charged lepton and the soft pion from the decay D*+ -> D(0)pi(+) are reconstructed, we obtain f(00) = 0.487 +/- 0.010(stat) +/- 0.008(syst). Our result does not depend on the branching fractions of (B) over bar (0) -> D(*+)l(-)<(nu)over bar >(l) and D*+ -> D(0)pi(+) decays, on the ratio of the charged and neutral B meson lifetimes, nor on the assumption of isospin symmetry.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||
| Journal or Publication Title: | PHYSICAL REVIEW LETTERS | ||||
| Publisher: | AMERICAN PHYSICAL SOC | ||||
| ISSN: | 0031-9007 | ||||
| Official Date: | 22 July 2005 | ||||
| Dates: |
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| Volume: | 95 | ||||
| Number: | 4 | ||||
| Number of Pages: | 7 | ||||
| Page Range: | - | ||||
| DOI: | 10.1103/PhysRevLett.95.042001 | ||||
| Publication Status: | Published |
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