$D_{s0}(2317)$ as a tetraquark state with QCD sum rules in heavy quark   limit
  In this article, we take the point of view that the charmed scalar meson $D_{s0}(2317)$ be a tetraquark state and devote to calculate its mass within the framework of the QCD sum rules approach in the heavy quark limit. The numerical values for the mass of the $D_{s0}(2317)$ are consistent with the experimental data, there must be some tetraquark component in the scalar meson $D_{s0}(2317)$. Detailed discussions about the threshold parameter and Borel parameter for the multiquark states are also presented. 
Zhi-Gang Wang (NCEPU), Shao-Long Wan (USTC)