arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新，休息一下吧，周末愉快~~
arXiv 2103.12425hep-phhep-exhep-th
收藏

$cs\bar{c}\bar{s}$四夸克系统中某些奇异态的解释

The explanation of some exotic states in the $cs\bar{c}\bar{s}$ tetraquark system

Xuejie Liu, Hongxia Huang, Jialun Ping, Dianyong Chen, Xinmei Zhu

备注：
10 pages, 3 figures
阅读 PDF
arXiv 页面 ↗HTML 原文 ↗

摘要：

在夸克离域色屏蔽模型（QDCSM）的框架下，受LHCb实验组最近对$χ_{c0}(3930)$、$X(4685)$和$X(4630)$的观测以及多个实验组对$X(4350)$、$X(4500)$等奇异共振的启发，系统地研究了含有$IJ^{P}=00^+$、$01^+$和$02^+$的$cs\bar{c}\bar{s}$四夸克系统.本文考虑了介子-介子和双夸克-反双夸克两种结构，以及这两种结构的所有通道的通道耦合。数值结果表明，分子结合态$\bar{D}_{s}D_{s}$与$IJ^{P}=00^+$可以解释$χ_{c0}(3930)$ .此外，利用稳定化方法，得到了几个共振态。在共振质量4035 MeV、4385 MeV、4524 MeV和4632 MeV周围分别存在四个$IJ^{P}=00^{+}$状态;在共振质量4327 MeV周围存在一个$IJ^{P}=01^{+}$状态;并且在共振质量4419 MeV和4526 MeV周围分别存在两个$IJ^{P}=02^{+}$状态。它们都是紧凑的四夸克。其中，$X(4350)$、$X(4500)$和$X(4700)$可以解释为具有$IJ^{P}=00^{+}$的紧致四夸克态，而$X(4274)$可能是具有$IJ^{P}=01^{+}$的紧致四夸克态的候选者.预计将有更多的实验测试来检查所有这些可能的共振态的存在。

英文摘要：

Inspired by the recent observation of $χ_{c0}(3930)$, $X(4685)$ and $X(4630)$ by the LHCb Collaboration and some exotic resonances such as $X(4350)$, $X(4500)$, etc. by several experiment collaborations, the $cs\bar{c}\bar{s}$ tetraquark systems with $IJ^{P}=00^+$, $01^+$ and $02^+$ are systematically investigated in the framework of the quark delocalization color screening model(QDCSM). Two structures, the meson-meson and diquark-antidiquark structures, as well as the channel-coupling of all channels of these two configurations are considered in this work. The numerical results indicate that the molecular bound state $\bar{D}_{s}D_{s}$ with $IJ^{P}=00^+$ can be supposed to explain the $χ_{c0}(3930)$. Besides, by using the stabilization method, several resonant states are obtained. There are four $IJ^{P}=00^{+}$ states around the resonance mass 4035 MeV, 4385 MeV, 4524 MeV, and 4632 MeV, respectively; one $IJ^{P}=01^{+}$ state around the resonance mass 4327 MeV; and two $IJ^{P}=02^{+}$ states around the resonance mass 4419 MeV and 4526 MeV, respectively. All of them are compact tetraquarks. Among these states, $X(4350)$, $X(4500)$ and $X(4700)$ can be explained as the compact tetraquark state with $IJ^{P}=00^{+}$, and the $X(4274)$ is possible to be a candidate of the compact tetraquark state with $IJ^{P}=01^{+}$. More experimental tests are expected to check the existence of all these possible resonance 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。

↑