( 2700 ) a charmed tetraquark state ?
نویسنده
چکیده
In this article, we take the point of view that the Ds(2700) be a tetraquark state, which consists of a scalar diquark and a vector antidiquark, and calculate its mass with the QCD sum rules. The numerical result indicates that the mass of the vector charmed tetraquark state is about MV = (3.75±0.18)GeV or MV = (3.71 ± 0.15)GeV from different sum rules, which is about 1GeV larger than the experimental data. If there are some tetraquark components in the Ds(2700), the components should be very small. PACS number: 12.38.Aw, 14.40.Lb
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Is Ds(2700) a charmed tetraquark state?
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