Study of $J/\psi \to \omega p\bar{p}$ at BESIII

Abstract

The decay $J/\psi \to \omega p\bar{p}$ has been studied, using $225.3\times 10^6$ $J/\psi$ events accumulated at BESIII. No significant enhancement near the $p\bar{p}$ invariant-mass threshold (denoted as $X(p\bar{p})$) is observed. The upper limit of the branching fraction $\mathcal{B}(J/\psi \to \omega X(p\bar{p})\to \omega p\bar{p})$ is determined to be $3.9\times 10^{-6}$ at the 95% confidence level. The branching fraction of $J/\psi \to \omega p\bar{p}$ is measured to be $\mathcal{B}(J/\psi \to \omega p\bar{p})=(9.0\pm 0.2(\text{stat.})\pm 0.9(\text{syst.}))\times 10^{-4}$.

8 pages, 4 figures

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Cited by in corpus (12)

• The BESIII Physics Programme
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• $J/\psi \to \gamma {\eta }^{\prime }{\pi }^{+}{\pi }^{-}$ and the structure observed around the $\bar{p}p$ threshold
• Final-state interaction in the process $e^{+}{e}^{-}\to {\Lambda }_c{\bar{\Lambda }}_c$
• Observation of $J/\psi$ Electromagnetic Dalitz Decays to $X(1835)$, $X(2120)$ and $X(2370)$
• Measurement of $e^{+}{e}^{-}\to \Lambda \bar{\Lambda }\eta$ from 3.5106 to 4.6988 GeV and study of $\Lambda \bar{\Lambda }$ mass threshold enhancement
• Near-threshold resonance in $e^{+}{e}^{-}\to {\Lambda }_c{\bar{\Lambda }}_c$ process
• 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
• The nucleon resonances in the $J/\psi \to p\bar{p}{\eta }^{\prime }$ decay
• Looking for bound states and resonances in the ${\eta }^{\prime }K\bar{K}$ system
• Coupled-channel analysis of the near-threshold $e^{+}{e}^{-}\to N\bar{N}$ cross sections