Search for $X(1870)$ via the decay $J/\psi \to \omega K^{+}{K}^{-}\eta$

Abstract

Using a sample of $(10087\pm 44)\times 10^6$ $J/\psi$ events collected by the BESIII detector at the BEPCII collider, we search for the decay $X(1870)\to K^{+}{K}^{-}\eta$ via the $J/\psi \to \omega K^{+}{K}^{-}\eta$ process for the first time. No significant $X(1870)$ signal is observed. The upper limit on the branching fraction of the decay $J/\psi \to \omega X(1870)\to \omega K^{+}{K}^{-}\eta$ is determined to be $9.55\times 10^{-7}$ at the $90\%$ confidence level. In addition, the branching faction $B(J/\psi \to \omega K^{+}{K}^{-}\eta )$ is measured to be $(3.33\pm 0.02(stat.)\pm 0.12(syst.))\times 10^{-4}$.