2003/03/24 by The BABAR Collaboration, B. Aubert, R. Barate +98 · 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.90.231801
published as Phys.Rev.Lett.90:231801,2003 · 7 pages, 3 postscript figures, submitted to Phys. Rev. Lett
arxiv created 2003/03/24 · openalex publication_date 2003/06/13 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04
We have performed a search for the decays B+\ensuremath→J/\ensuremathψp\ensuremathΛ and B0\ensuremath→J/\ensuremathψpp in a data set of (88.9\ifmmode±\else\textpm\fi1.0)\ifmmode×\else\texttimes\fi106 \ensuremathΥ(4S) decays collected by the BABAR experiment at the PEP-II e+e^\ensuremath- storage ring at the Stanford Linear Accelerator Center. Four charged B candidates have been observed with an expected background of 0.21\ifmmode±\else\textpm\fi0.14 events. The corresponding branching fraction is (12_\ensuremath-6+9)\ifmmode×\else\texttimes\fi10^\ensuremath-6, where statistical and systematic uncertainties have been combined. The result can be interpreted as a 90% confidence level (C.L.) upper limit of 26\ifmmode×\else\texttimes\fi10^\ensuremath-6. We also find one B0 candidate, with an expected background of 0.64\ifmmode±\else\textpm\fi0.17 events, implying a 90% C.L. upper limit of 1.9\ifmmode×\else\texttimes\fi10^\ensuremath-6.