Please use this identifier to cite or link to this item:
http://bura.brunel.ac.uk/handle/2438/19595
Title: | Measurement of the Branching Fraction of e^+e^- --> B0B0bar at the Upsilon(4S) Resonance |
Authors: | Collaboration, TBABAR Aubert, B Kyberd, P |
Issue Date: | 10-Aug-2004 |
Publisher: | ArXiv |
Citation: | ArXiv, 2004, pp. 1 - 18 |
Abstract: | 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^{-} \bar{\nu}_{\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. |
URI: | http://bura.brunel.ac.uk/handle/2438/19595 |
ISSN: | 2331-8422 |
Appears in Collections: | Dept of Electronic and Electrical Engineering Research Papers |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
FullText.pdf | 228.28 kB | Adobe PDF | View/Open |
Items in BURA are protected by copyright, with all rights reserved, unless otherwise indicated.