Study of Jψdecaying into ωp \bar p

Abstract

The decay $J/\psi \to \omega p\bar{p}$ is studied using a $5.8\times 10^7$ $J/\psi$ event sample accumulated with the BES II detector at the Beijing electron-positron collider. The decay branching fraction is measured to be $B(J/\psi \to \omega p\bar{p})=(9.8\pm 0.3\pm 1.4)\times 10^{-4}$. No significant enhancement near the $p\bar{p}$ mass threshold is observed, and an upper limit of $B(J/\psi \to \omega X(1860))B(X(1860)\to p\bar{p})$$<1.5\times 10^{-5}$ is determined at the 95% confidence level, where X(1860) designates the near-threshold enhancement seen in the $p\bar{p}$ mass spectrum in $J/\psi \to \gamma p\bar{p}$ decays.

5 pages, 4 figures

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Cited by in corpus (22)

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• Progress Toward Understanding Baryon Resonances
• A New Hadron Spectroscopy
• Spin-Parity Analysis of ppbar Mass Threshold Structure in J/psi and psi' Radiative Decays
• Observation of a ppb mass threshoud enhancement in ψ^\prime\toπ^+π^-J/ψ(J/ψ\toγp\bar{p}) decay
• On the near-threshold $\bar{p}p$ invariant mass spectrum measured in $J/\psi$ and ${\psi }^{\prime }$ decays
• Study of $J/\psi \to \omega p\bar{p}$ at BESIII
• Rescattering Effect and Near Threshold Enhancement of $p\bar{p}$ System
• Fine structure of the cross sections of $e^{+}{e}^{-}$ annihilation near the thresholds of $p\bar{p}$ and $n\bar{n}$ production
• Interaction of real and virtual $p\bar{p}$ pairs in $J/\psi \to p\bar{p}\gamma (\rho ,\omega )$ decays
• Physics Accomplishments and Future Prospects of the BES Experiments at the BEPC Collider
• Near threshold ppbar enhancement in the J/psi -> omega ppbar decay
• A possible mechanism for producing the threshold enhancement in $J/\psi \to \gamma p\bar{p}$
• Meson Emission Model of Psi to N Nbar m Charmonium Strong Decays
• Final-state interaction in the process $e^{+}{e}^{-}\to {\Lambda }_c{\bar{\Lambda }}_c$
• QCD Exotics
• Near-threshold resonance in $e^{+}{e}^{-}\to {\Lambda }_c{\bar{\Lambda }}_c$ process
• Baryonium, a common ground for atomic and high energy physics
• Measurement of the branching fraction of $J/\psi \to \omega {\eta }^{\prime }{\pi }^{+}{\pi }^{-}$ and search for $J/\psi \to \omega X(1835),X(1835)\to {\eta }^{\prime }{\pi }^{+}{\pi }^{-}$ decay
• Observation of $\psi (3686)\to p\bar{p}\varphi$
• Meson production in $J/\psi$ decays and $J/\psi \to N\bar{N}\gamma$ process
• Psi to N Nbar m