Observation of $\psi (3686)\to 3\varphi$

Abstract

Using $(2.712\pm 0.014)\times 10^9$ $\psi (3686)$ events collected by the BESIII detector operating at the BEPCII collider, we report the first observation of $\psi (3686)\to 3\varphi$ decay with a significance larger than 10$\sigma$. The branching fraction of this decay is determined to be $(1.46\pm 0.05\pm 0.17)\times 10^{-5}$, where the first uncertainty is statistical and the second is systematic. No significant structure is observed in the $\varphi \varphi$ invariant mass spectra.

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Cited by in corpus (1)

• First measurements of the branching fractions of $J/\psi \to {\Xi }^0\bar{\Lambda }{K}_S^0+c.c.$, $J/\psi \to {\Xi }^0{\bar{\Sigma }}^0{K}_S^0+c.c.$, and $J/\psi \to {\Xi }^0{\bar{\Sigma }}^{-}{K}^{+}+c.c.$