Measurement of the Branching Fraction of Upsilon(4S) --> B0B0bar
| dc.creator | The BABAR Collaboration | |
| dc.creator | Aubert, B. | |
| dc.date | 2005-04-01 | |
| dc.date | 2005-07-10 | |
| dc.date.accessioned | 2026-07-07T11:58:04Z | |
| dc.date.available | 2026-07-07T11:58:04Z | |
| dc.description | We report the first measurement of the branching fraction f00 for Upsilon(4S) --> B0B0bar. The data sample consists of 81.7 fb^-1 collected at the Upsilon(4S) resonance with the BABAR detector at the PEP-II asymmetric-energy e^+e^- storage ring. Using partial reconstruction of the decay B0bar --> D^{*+} \ell^{-} \barν_{\ell} in which only the charged lepton and the soft pion from the decay D^{*+} --> D0 pi^+ are reconstructed, we obtain f00 = 0.487 \pm 0.010(stat) \pm 0.008(sys). Our result does not depend on the branching fractions of B0bar --> D^{*+} \ell^{-} \barν_{\ell} and D^{*+} --> D0 pi^+ decays, on the ratio of the charged and neutral B meson lifetimes, nor on the assumption of isospin symmetry. | |
| dc.description | Revtex4, 7 pages, 3 eps figures, has been accepted for publication in PRL | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0504001 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0504001 | |
| dc.identifier | Phys.Rev.Lett.95:042001,2005 | |
| dc.identifier | doi:10.1103/PhysRevLett.95.042001 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/206101 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Measurement of the Branching Fraction of Upsilon(4S) --> B0B0bar | |
| dc.type | text |