arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2008.13014hep-lat
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有限体积$DDK$系统

$DDK$ system in finite volume

Jin-Yi Pang, Jia-Jun Wu, Li-Sheng Geng

摘要:

由于$K$介子和$D$介子之间的强吸引相互作用,使得$DDK$三体系统处于束缚态.这个三体束缚态的最小夸克含量是$cc\bar{q}\bar{s}$和$q=u,d$。一旦被发现,它将是一种明显奇异的四夸克态。为了证实对$DDK$系统的唯象研究,我们可以把格点量子色动力学作为与实验测量并行的强有力的理论工具。本文利用非相对论有效理论和有限体积中的粒子二聚体图像导出了一个三体量子化条件方案。该三体系统的晶格谱是在现有模型输入内计算的。光谱显示了$DDK$系统的各种有趣的性质,并且它可能揭示$D^*(2317)$的性质。预计这一预测的频谱将在未来的晶格模拟中进行测试。

英文摘要:

The $DDK$ 3-body system is supposed to be bound due to the strongly attractive interaction between the $D$ meson and the $K$ meson in the isospin zero channel. The minimum quark content of this 3-body bound state is $cc\bar{q}\bar{s}$ with $q=u,d$. It will be an explicitly exotic tetraquark state once discovered. In order to confirm the phenomenological study of the $DDK$ system, we can refer to lattice QCD as a powerful theoretical tool parallel to the experiment measurement. In this paper, a 3-body quantization condition scheme is derived via the non-relativistic effective theory and the particle-dimer picture in finite volume. Lattice spectrum of this 3-body system is calculated within the existing model inputs. The spectrum shows various interesting properties of the $DDK$ system, and it may reveal the nature of the $D^*(2317)$. This predicated spectrum is expected to be tested in future lattice simulations.

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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