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

Abstract

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 $M_X=(4.37\pm 0.15)\mathrm{GeV}$ 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.

Comments: 9 pages, 4 figures, third version