Is Ds(2700) a charmed tetraquark state?

  • In this article, we assume that the Ds(2700) is 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 1 GeV larger than the experimental data. Such tetraquark omponent should be very small in the Ds(2700).

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WANG Zhi-Gang. Is Ds(2700) a charmed tetraquark state?[J]. Chinese Physics C, 2008, 32(10): 797-802. doi: 10.1088/1674-1137/32/10/006
WANG Zhi-Gang. Is Ds(2700) a charmed tetraquark state?[J]. Chinese Physics C, 2008, 32(10): 797-802.  doi: 10.1088/1674-1137/32/10/006 shu
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Received: 2007-12-17
Revised: 2008-02-18
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Is Ds(2700) a charmed tetraquark state?

    Corresponding author: WANG Zhi-Gang,
  • Department of Physics, North China Electric Power University, Baoding 071003, China

Abstract: 

In this article, we assume that the Ds(2700) is 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 1 GeV larger than the experimental data. Such tetraquark omponent should be very small in the Ds(2700).

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