2002/06/30 by Belle Collaboration, K. Abe, R. Abe +96 · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1103/physrevlett.89.122001
published as Phys.Rev.Lett.89:122001,2002 · 10 pages, 3 figures
openalex publication_date 2002/08/27 · arxiv created 2002/10/06 · arxiv updated 2009/11/30 · openalex created_date 2021/10/25 · openalex updated_date 2026/07/28
We report the first observation of the decay B0\ensuremath→D^\ifmmode±\else\textpm\fiD^*\ensuremath∓ with the Belle detector at the KEKB e+e^\ensuremath- Collider operated at the \ensuremathΥ(4S) resonance. The sum of branching fractions B(B0\ensuremath→D+D^*\ensuremath-)+B(B0\ensuremath→D^\ensuremath-D*+) is measured to be (1.17\ifmmode±\else\textpm\fi0.26_\ensuremath-0.25+0.22)\ifmmode×\else\texttimes\fi10^\ensuremath-3 using the full reconstruction method where both charmed mesons from B0 decays are reconstructed. A consistent value [(1.48\ifmmode±\else\textpm\fi0.38_\ensuremath-0.31+0.28)\ifmmode×\else\texttimes\fi10^\ensuremath-3] is obtained using a partial reconstruction technique that uses only the slow pion from the D^*\ensuremath-\ensuremath→D0\ensuremathπ^\ensuremath- decay and a fully reconstructed D+ to reconstruct the B0.