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arXiv 2108.06155hep-ph
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轻四夸克态光谱学研究

Study of light tetraquark spectroscopy

Zheng Zhao, Kai Xu, Attaphon Kaewsnod, Xuyang Liu, Ayut Limphirat, Yupeng Yan

AI总结:

本文在组分夸克模型中用质量依赖的类Cornell势和自旋耦合计算轻四夸克态质量,并与实验奇特介子态比较,提出f0(1500)和f0(1710)可能为J=0的轻四夸克态基态。

摘要:

我们在一个组分夸克模型中计算了$qq\ar q\ar q$四夸克态基态和第一径向激发态的质量,该模型采用了类Cornell势和单胶子交换自旋-自旋耦合。根据格点QCD数据,类Cornell势和单胶子交换自旋-自旋耦合的三个耦合参数被建议为质量依赖的,并且所有模型参数通过研究轻介子、粲介子和底介子预先确定。我们将轻四夸克态的理论预言与轻无味介子区中观测到的奇特介子态进行了比较,并提出了尝试性指派。该工作表明$f_0(1500)$和$f_0(1710)$可能是$J=0$的轻四夸克态基态。

英文摘要:

We calculate the masses of the $qq\bar q\bar q$ tetraquark ground state and first radial excited state in a constituent quark model where the Cornell-like potential and one-gluon exchange spin-spin coupling are employed. The three coupling parameters for the Cornell-like potential and one-gluon exchange spin-spin coupling are proposed mass-dependent in accordance with Lattice QCD data, and all model parameters are predetermined by studying light, charmed and bottom mesons. The theoretical predictions for light tetraquarks are compared with the observed exotic meson states in the light-unflavored meson sector, and tentative assignments are suggested. The work suggests that the $f_0(1500)$ and $f_0(1710)$ might be ground light tetraquark states with $J=0$.

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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