2002/03/05 by The BaBar Collaboration, D. Boutigny, B. Aubert +98 · 2 citations
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.89.061801
published as Phys.Rev.Lett.89:061801,2002 · 7 pages, 2 figures, submitted to PRL
arxiv created 2002/03/05 · openalex publication_date 2002/07/19 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04
We report a measurement of the branching fraction of the decay B0\ensuremath→D*+D^*\ensuremath- and of the CP-odd component of its final state using the BABAR detector. With data corresponding to an integrated luminosity of 20.4 fb^\ensuremath-1 collected at the \ensuremathΥ(4S) resonance during 1999--2000, we have reconstructed 38 candidate signal events in the mode B0\ensuremath→D*+D^*\ensuremath- with an estimated background of 6.2\ifmmode±\else\textpm\fi0.5 events. From these events, we determine the branching fraction to be B(B0\ensuremath→D*+D^*\ensuremath-)=[8.3\ifmmode±\else\textpm\fi1.6(stat)\ifmmode±\else\textpm\fi1.2(syst)]\ifmmode×\else\texttimes\fi10^\ensuremath-4. The measured CP-odd fraction of the final state is 0.22\ifmmode±\else\textpm\fi0.18(stat)\ifmmode±\else\textpm\fi0.03(syst).