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arXiv 2204.09384hep-ph
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过程$D^+_s \to π^+ K^0_S K^0_S$和$f_0(1710)$的同向载体配偶体的理论研究

Theoretical study of the process $D^+_s \to π^+ K^0_S K^0_S$ and the isovector partner of $f_0(1710)$

Xin Zhu, De-Min Li, En Wang, Li-Sheng Geng, Ju-Jun Xie

备注：
9 pages, 9 figures, the version for PRD
发表信息：
Phys. Rev. D 105, 116010 (2022)
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摘要：

我们提出了一个理论研究$a_0(1710)$，$f_0(1710)$的isovector伙伴，在过程$D^+_s \to π^+ K^0_SK^0_S$。弱相互作用部分通过粲夸克衰变过程进行：$c(\bar{s}) \to (s + \bar{d} + u)(\bar{s})$，而强子化部分发生在两种机制中，不同之处在于弱衰变的夸克如何结合成具有真空量子数的夸克-反夸克对$q\bar{q}$的$πK^*$。除了$K^{*+} \to π^+ K^0_S$的树形图的贡献外，我们还考虑了$K^*\bar{K}^*$末态相互作用的手征幺正方法，生成中间态$a_0(1710)$，然后它衰减到末态$K^0_SK^0_S$。我们发现，最近的实验测量的$K^0_SK^0_S$和$π^+K^0_S$不变的质量分布可以很好地再现，所提出的机制可以提供有价值的信息的性质标量$f_0(1710)$和它的isovector伙伴$a_0(1710)$。

英文摘要：

We present a theoretical study of $a_0(1710)$, the isovector partner of $f_0(1710)$, in the process $D^+_s \to π^+ K^0_SK^0_S$. The weak interaction part proceeds through the charm quark decay process: $c(\bar{s}) \to (s + \bar{d} + u)(\bar{s})$, while the hadronization part takes place in two mechanisms, differing in how the quarks from the weak decay combines into $πK^*$ with a quark-antiquark pair $q\bar{q}$ with the vacuum quantum numbers. In addition to the contribution from the tree diagram of the $K^{*+} \to π^+ K^0_S$, we have also considered the $K^*\bar{K}^*$ final-state interactions within the chiral unitary approach to generate the intermediate state $a_0(1710)$, then it decays into the final states $K^0_SK^0_S$. We find that the recent experimental measurements on the $K^0_SK^0_S$ and $π^+K^0_S$ invariant mass distributions can be well reproduced, and the proposed mechanism can provide valuable information on the nature of scalar $f_0(1710)$ and its isovector partner $a_0(1710)$.

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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