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arXiv 1606.01006hep-phnucl-th
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组分夸克模型中两个奇夸克一个重味的重子

Dibaryons with two strange quarks and one heavy flavor in a constituent quark model

Aaron Park, Woosung Park, Su Houng Lee

摘要:

用$I=\frac{1}{2}$研究了含有两个奇夸克和一个重味的重子的对称性和稳定性。我们用两种方法构造了双重子的波函数。首先,我们从四种可能的SU(3)味态出发,直接构造了二重子的色态和自旋态。第二,我们考虑由五个轻夸克组成的态,然后通过增加一个重夸克构造出双重子的波函数。本文用变分法讨论了具有禁闭势和超精细势的组分夸克模型中的重子对强衰变为两个重子的稳定性。我们发现,对于S= 0,1,2的所有组态,双重子的基态都是两个重子的和,不存在对强衰变稳定的紧致束缚态.

英文摘要:

We investigate the symmetry property and the stability of dibaryons containing two strange quarks and one heavy flavor with $I=\frac{1}{2}$. We construct the wave function of the dibaryon in two ways. First, we directly construct the color and spin state of the dibaryon starting from the four possible SU(3) flavor state. Second, we consider the states composed of five light quarks, and then construct the wave function of the dibaryon by adding one heavy quark. The stability of the dibaryon against the strong decay into two baryons is discussed by using variational method in a constituent quark model with confining and hyperfine potential. We find that for all configurations with S=0,1,2, the ground states of the dibaryons are the sum of two baryons, and there are no compact bound state that is stable against the strong decay.

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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