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arXiv nucl-th/0501034nucl-th
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核中$Θ^+$的束缚态

Bound states of $Θ^+$ in nuclei

E. Oset, D. Cabrera, Q. B. Li, V. K. Magas, M. J. Vicente Vacas

摘要:

我们研究了$K N$和$ K πN$组分在原子核中的结合能和宽度。第一个导致可忽略的贡献,而第二个导致相当大的吸引力,足以将$Θ^+$结合在原子核中。泡利阻塞和约束效应的$K N$衰变大大减少$Θ^+$衰变宽度的核和介质的影响相关的$ K πN$组件也导致一个非常小的宽度,作为其结果,人们发现之间的分离绑定水平大大大于宽度的状态。

英文摘要:

We study the binding energy and the width of the $Θ^+$ in nuclei, associated to the $K N$ and $ K πN$ components. The first one leads to negligible contributions while the second one leads to a sizeable attraction, enough to bind the $Θ^+$ in nuclei. Pauli blocking and binding effects on the $K N$ decay reduce considerably the $Θ^+$ decay width in nuclei and medium effects associated to the $ K πN$ component also lead to a very small width, as a consequence of which one finds separation between the bound levels considerably larger than the width of the states.

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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