Analysis of the X(4350) as a scalar bar{c}c and {D}_s^ast {bar {D}}_s^ast mixing state with QCD sum rules

In this article, we assume that the narrow structure X(4350) is a scalar $\bar{c}c-{D}_s^\ast {\bar {D}}_s^\ast$ mixing state, and study its mass using the QCD sum rules. The numerical result $M_X=(4.37\pm0.15)\,\rm{GeV}$ is in good agreement with the experimental data, the X(4350) may be a scalar $\bar{c}c-{D}_s^\ast {\bar {D}}_s^\ast$ mixing state. Other possibility, such as a scalar (tensor) $cs\bar{c}\bar{s}$ tetraquark state is not excluded.