Observation of the $\psi (3686)$ decays into ${\Sigma }^{+}{\bar{\Sigma }}^{-}\omega$ and ${\Sigma }^{+}{\bar{\Sigma }}^{-}\varphi$

Abstract

Based on $(27.08\pm 0.14)\times 10^8$ $\psi (3686)$ events collected with the BESIII detector operating at the BEPCII collider, the $\psi (3686)\to {\Sigma }^{+}{\bar{\Sigma }}^{-}\omega$ and ${\Sigma }^{+}{\bar{\Sigma }}^{-}\varphi$ decays are observed for the first time with statistical significances of 13.8$\sigma$ and 7.6$\sigma$, respectively. The corresponding branching fractions are measured to be $\mathcal{B}(\psi (3686)\to {\Sigma }^{+}{\bar{\Sigma }}^{-}\omega )=(1.90\pm 0.18\pm 0.21)\times 10^{-5}$ and $\mathcal{B}(\psi (3686)\to {\Sigma }^{+}{\bar{\Sigma }}^{-}\varphi )=(2.96\pm 0.54\pm 0.41)\times 10^{-6}$, where the first uncertainties are statistical and the second systematic.

arXiv comment10 pages

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Cited by in corpus (2)

• Study of the decay ψ(3686) \to Σ^{0}\barΣ^{0}ϕ
• Observation of the decay $\psi (3686)\to {\Sigma }^0{\bar{\Sigma }}^0\omega$