Hadronic B decays to open charm at the BaBar Experiment

2001/10/09 by J. Schieck, Jochen R. Schieck, Schieck, Jochen R.
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/0110014

8 pages, 4 postscript figues, Contributed to the Proceedings of the International Europhysics Conference on High Energy Physics

arxiv created 2001/10/09 · arxiv updated 2009/11/30

Abstract

Using about 23M B B events collected in 1999-2000 with the BABAR detector, we report on the decays B → D^(*) D^(*)K and B⁰ → D^*+D^*-. The branching fractions of the low background decay modes B → D^(*) D^(*)K are determined to be \cal B(B⁰ → D^*-D⁰K⁺) = (2.8 ± 0.7 ± 0.5)× 10^-3 and \cal B(B⁰ → D^*-D^*0K⁺) = (6.8 ± 1.7 ± 1.7)× 10^-3, where the first error quoted is statistical and the second systematic. Observation of a significant number of candidates in the color-suppressed decay mode B⁺→ D^*+D^*-K⁺ is reported with a branching fraction \cal B(B⁺→ D^*+D^*-K⁺)= (3.4± 1.6± 0.9)× 10^-3. Decays of the type B → D^(*) D^(*) can be used to provide a measurement of the parameter sin 2 β of the Unitarity Triangle. For this decay mode we measure a branching fraction of \cal BR (B⁰ → D^*+D^*-) = (8.0 ± 1.6± 1.2)× 10^-4. All results presented here are preliminary.

Related

• Investigation of B --> D^(*)anti-D^(*)K decays with the BABAR detector
• Study of B-->D(*)anti-D(*) decays with the BABAR detector
• Measurement of the branching fraction for the decay B⁰ --> D^*+D^*-
• Hadronic B Decays to Charm and Charmonium With the BaBar Experiment
• B Decays to Hadronic States with Charm/Charmonium in BaBar