2003/07/31 by The Belle Collaboration, R. Chistov, K. Abe +94 · 4 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1103/physrevlett.93.051803
published as Phys.Rev.Lett.93:051803,2004 · submitted to Physical Review Letters
arxiv created 2004/01/22 · openalex publication_date 2004/07/29 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01
We report the first observation of the decay B+\ensuremath→\ensuremathψ(3770)K+ where the \ensuremathψ(3770) is reconstructed in the D0D0 and D+D^\ensuremath- decay channels. The obtained branching fraction is B(B+\ensuremath→\ensuremathψ(3770)K+)=(0.48\ifmmode±\else\textpm\fi0.11\ifmmode±\else\textpm\fi0.07)\ifmmode×\else\texttimes\fi10^\ensuremath-3. We have measured the branching fraction for the decay B+\ensuremath→D0D0K+ to be (1.17\ifmmode±\else\textpm\fi0.21\ifmmode±\else\textpm\fi0.15)\ifmmode×\else\texttimes\fi10^\ensuremath-3 and set a 90% confidence level upper limit of 0.90\ifmmode×\else\texttimes\fi10^\ensuremath-3 for the decay B+\ensuremath→D+D^\ensuremath-K+. We also present the results of a search for possible decays to DD and D0D0\ensuremathπ0 of the recently observed X(3872) particle. The analysis is based on 88 fb^\ensuremath-1 of data collected at the \ensuremathΥ(4S) resonance by the Belle detector at the KEKB asymmetric-energy e+e^\ensuremath- collider.