Measurement of the Branching Fraction of e^+e^- --> B0B0bar at the Upsilon(4S) Resonance
| dc.creator | The BABAR Collaboration | |
| dc.creator | Aubert, B. | |
| dc.date | 2004-08-10 | |
| dc.date.accessioned | 2026-07-07T03:36:25Z | |
| dc.date.available | 2026-07-07T03:36:25Z | |
| dc.description | We report a measurement of the branching fraction e^+e^- --> B0B0bar with a data sample 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} we obtain a preliminary result of f00 = 0.486 +- 0.010(stat.) +- 0.009(sys.). Our result does not depend on branching fractions of the B0bar and the D^{*+} decay chains, on the simulated reconstruction efficiency, on the ratio of the charged and neutral B meson lifetimes, nor on assumption of isospin symmetry. This measurement is important for normalizing many B decay branching fractions, and contributes to our understanding of isospin violation in the Upsilon(4S) system. | |
| dc.description | Latex, 18 pages, 7 figures, submitted to ICHEP 2004, Beijing, China | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0408022 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0408022 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/37752 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurement of the Branching Fraction of e^+e^- --> B0B0bar at the Upsilon(4S) Resonance | |
| dc.type | text |