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arXiv 0708.0155hep-ph
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D_s(2700)是粲四夸克态吗?

Is D_s(2700) a charmed tetraquark state ?

Zhi-Gang Wang

摘要:

本文认为$D_s(2700)$是由一个标量双夸克和一个矢量反双夸克组成的四夸克态,并利用QCD求和规则计算了它的质量。数值计算结果表明,矢量粲四夸克态的质量约为$M_V=(3.75\pm0.18)\rm{GeV}$或$M_V=(3.71\pm0.15)\rm{GeV}$,比实验值大了约$1\rm{GeV}$.这样的四夸克组分在$D_s(2700)$中应该是非常小的。

英文摘要:

In this article, we take the point of view that the $D_s(2700)$ 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 $M_V=(3.75\pm0.18)\rm{GeV}$ or $M_V=(3.71\pm0.15)\rm{GeV}$ from different sum rules, which is about $1\rm{GeV}$ larger than the experimental data. Such tetraquark component should be very small in the $D_s(2700)$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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