Inclusive Semileptonic B Decays at BABAR
Abstract
We present measurements of the inclusive semileptonic branching fractions of charged and neutral B mesons using 20.6 fb-1 of data measured at the Upsilon(4S) with the BABAR detector. Events are tagged with a fully reconstructed hadronic decay of a B meson. The correlation between the flavor of the tag B meson and the electron charge allows the separation of prompt semileptonic B decays and cascade semileptonic charm decays. We obtain the preliminary inclusive semileptonic branching fraction of charged B mesons b+ = 0.103+/-0.006+/-0.005, neutral B mesons b0 = 0.104+/-0.008+/-0.005, their average b = 0.104+/-0.005+/-0.004, and their ratio b+/b0 = 0.99+/-0.10+/-0.03.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- April 2002
- DOI:
- 10.48550/arXiv.hep-ex/0204001
- arXiv:
- arXiv:hep-ex/0204001
- Bibcode:
- 2002STIN...0292118L
- Keywords:
-
- Radiation Measuring Instruments;
- Mesons;
- Particle Decay;
- Linear Accelerators;
- Theoretical Physics;
- Flavor (Particle Physics);
- Charm (Particle Physics);
- Electrons;
- Atomic and Molecular Physics;
- High Energy Physics - Experiment
- E-Print:
- 6 pages, 1 postscript figure, submitted to EPS 2001