Improved measurement of anti-B0 ---> D-(s) D+ and search for anti-B0 ---> D+(s) D-(s) at Belle
Journal
Physical Review
Journal Volume
D75
Pages
091102
Date Issued
2007-03
Author(s)
Abstract
We reconstruct B̄0→Ds-D+ decays using a sample of 449×106 BB̄ pairs recorded by the Belle experiment, and measure the branching fraction to be B(B̄0→Ds-D+)=[7.5±0.2(stat)±0.8(syst) ±0.8(B′s)]×10-3. A search for the related decay B̄0→Ds+Ds- is also performed. Since we observe no statistically significant signal, an upper limit on the branching fraction is set at 3.6×10-5 (90% C.L.). © 2007 The American Physical Society.
Type
journal article