Ds0(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 Ds0(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 Ds0(2317) are consistent with the experimental data, there must be some tetraquark component in the scalar meson Ds0(2317). Detailed discussions about the threshold parameter and Borel parameter for the multiquark states are also presented.