Study of the decay ψ(3686) \to Σ^{0}\barΣ^{0}ϕ

Abstract

Using $(27.12\pm 0.14)\times 10^8$ $\psi (3686)$ events collected with the BESIII detector operating at the BEPCII collider, the decay $\psi (3686)\to {\Sigma }^0{\bar{\Sigma }}^0\varphi$ is observed for the first time with a statistical significance of 7.6$\sigma$. Its branching fraction is measured to be $(2.64\pm 0.32_{\text{stat}}\pm 0.12_{\text{sys}})\times 10^{-6}$, where the first uncertainty is statistical and the second is systematic. In addition, we search for potential intermediate states in the ${\Sigma }^0\varphi$(${\bar{\Sigma }}^0\varphi$) invariant mass distribution and a possible threshold enhancement in the ${\Sigma }^0{\bar{\Sigma }}^0$ system, but no conclusive evidence of is observed.

References in corpus (9)

• Heavy quarkonium: progress, puzzles, and opportunities
• Method for detector description transformation to Unity and application in BESIII
• Determination of the number of $\psi (3686)$ events taken at BESIII
• Observation of a near-threshold enhancement in the $\Lambda \bar{\Lambda }$ mass spectrum from $e^{+}{e}^{-}\to \varphi \Lambda \bar{\Lambda }$ at $\sqrt{s}$ from 3.51 to 4.60 GeV
• Measurement of $\psi (3686)\to \Lambda \bar{\Lambda }\eta$ and $\psi (3686)\to \Lambda \bar{\Lambda }{\pi }^0$ decays
• Observation of the $J/\psi$ and $\psi (3686)$ decays into $\eta {\Sigma }^{+}{\bar{\Sigma }}^{-}$
• Precise measurement of the branching fractions of $J/\psi \to \bar{\Lambda }{\pi }^{+}{\Sigma }^{-}+c.c.$ and $J/\psi \to \bar{\Lambda }{\pi }^{-}{\Sigma }^{+}+c.c.$
• Improved measurement of the decays ${\eta }^{\prime }\to {\pi }^{+}{\pi }^{-}{\pi }^{+(0)}{\pi }^{-(0)}$ and search for the rare decay ${\eta }^{\prime }\to 4{\pi }^0$
• Observation of the $\psi (3686)$ decays into ${\Sigma }^{+}{\bar{\Sigma }}^{-}\omega$ and ${\Sigma }^{+}{\bar{\Sigma }}^{-}\varphi$

Cited by in corpus (1)

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