Search for the Rare Decays $J/ψ\to D_{S}^{-} π^{+}$, $J/ψ\to D^{-} π^{+}$, and $J/ψ\to \bar D^{0} \bar K^{0}$

Details Search for the Rare Decays $J/ψ\to D_{S}^{-} π^{+}$, $J/ψ\to D^{-} π^{+}$, and $J/ψ\to \bar D^{0} \bar K^{0}$ Search for the Rare Decays $J/ψ\to D_{S}^{-} π^{+}$, $J/ψ\to D^{-} π^{+}$, and $J/ψ\to \bar D^{0} \bar K^{0}$

2007-07-20

arxiv.org/abs/0707.3005v1

Phys.Lett.B663:297-301,2008

Physics

High Energy Physics

High Energy Physics - Experiment

10 pages 4 figures

Scientific paper

10.1016/j.physletb.2008.04.028

Rare decay modes $J/\psi \to D_{S}^{-} \pi^{+} + c.c.$, $J/\psi \to D^{-} \pi^{+} + c.c.$, and $J/\psi \to \bar D^{0} \bar K^{0} + c.c.$ are searched for using 5.77$\times 10^{7}$ $J/\psi$ events collected with the BESII detector at the BEPC. No signal above background is observed. We present upper limits on the branching fractions $B(J/\psi \to D_{S}^{-} \pi^{+})$ $<$ 1.4$\times10^{-4}$, $B(J/\psi \to D^{-} \pi^{+})$ $<7.5\times10^{-5}$, and $B(J/\psi \to \bar D^{0} \bar K^{0})$ $<$ 1.7$\times10^{-4}$ at the 90% confidence level.

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