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Abstract: (arXiv)
Results are presented on ψ(2S)\psi(2S) and J/ψJ/\psi hadronic decays to KS0pKnˉK^0_SpK^-\bar n and KS0pˉK+nK^0_S\bar p K^+n final states from data samples of 14 million ψ(2S)\psi(2S) and 58 million J/ψJ/\psi events accumulated at the BES II detector. No Θ(1540)\Theta(1540) signal, the pentaquark candidate, is observed, and upper limits for B(ψ(2S)ΘΘˉKS0pKnˉ+KS0pˉK+n)<0.84×105{\cal B}(\psi(2S)\to\Theta\bar\Theta\to K^0_S p K^-\bar n + K^0_S \bar p K^+ n) < 0.84\times 10^{-5} and B(J/ψΘΘˉKS0pKnˉ+KS0pˉK+n)<1.1×105{\cal B}(J/\psi\to\Theta\bar\Theta\to K^0_S p K^-\bar n + K^0_S \bar p K^+ n) < 1.1\times 10^{-5} at the 90% confidence level are set. For single Θ(1540)\Theta(1540) production, the upper limits determined by our analysis are also on the order of 10510^{-5} in both ψ(2S)\psi(2S) and J/ψJ/\psi decays.
  • 14.20.Jn
  • 13.25.Gv
  • electron positron: colliding beams
  • electron positron: annihilation
  • psi mesons: electroproduction
  • psi(3685): hadronic decay
  • J/psi(3100): hadronic decay
  • pentaquark: search for
  • Theta(1540): hadronic decay
  • mass spectrum