Using data samples collected at center-of-mass energies $sqrt{s} = 4.23$, 4.26, and 4.36 GeV with the BESIII detector operating at the BEPCII storage ring, we search for the production of the charmoniumlike state $Y(4140)$ through a radiative transit
ion followed by its decay to $phi J/psi$. No significant signal is observed and upper limits on $sigma[e^{+} e^{-} rightarrow gamma Y(4140)] cdot mathcal{B}(Y(4140)rightarrow phi J/psi)$ at the $90%$ confidence level are estimated as 0.35, 0.28, and 0.33 pb at $sqrt{s} = 4.23$, 4.26, and 4.36 GeV, respectively.
With data samples collected with the BESIII detector operating at the BEPCII storage ring at center-of-mass energies from 4.009 to 4.420 GeV, the process $e^{+} e^{-} to gamma X(3872)$ is observed for the first time with a statistical significance of
$6.3sigma$. The measured mass of the $X(3872)$ is ($3871.9pm 0.7_{rm stat.}pm 0.2_{rm sys.}$) MeV/$c^2$, in agreement with previous measurements. Measurements of the product of the cross section $sigma[e^{+} e^{-} to gamma X(3872)]$ and the branching fraction $mathcal{B}[X(3872) to pi^{+} pi^{-} J/psi]$ at center-of-mass energies 4.009, 4.229, 4.260, and 4.360 GeV are reported. Our measurements are consistent with expectations for the radiative transition process $Y(4260) to gamma X(3872)$.
