2007/07/20 by BES collaboration, M. Ablikim, J. Z. Bai +98
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1016/j.physletb.2008.04.028
published as Phys.Lett.B663:297-301,2008 · 10 pages 4 figures
arxiv created 2007/07/20 · openalex publication_date 2008/04/19 · arxiv updated 2012/08/27 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01
Rare decay modes J/ψ→Ds−π++c.c., J/ψ→D−π++c.c., and J/ψ→D¯0K¯0+c.c. are searched for using 5.77×107J/ψ events collected with the BESII detector at the BEPC. No signal above background is observed. We present upper limits on the branching fractions of B(J/ψ→Ds−π+)<1.3×10−4, B(J/ψ→D−π+)<7.5×10−5, and B(J/ψ→D¯0K¯0)<1.7×10−4 at the 90% confidence level.