AI 中文总结
研究人员在组分夸克势模型中结合两类雅可比坐标等方法，分析多种S波四夸克系统，识别出部分共振候选态，对相关奇异四夸克候选态的解释提出挑战。
AI 中文摘要
我们在组分夸克势模型中系统研究S波四夸克系统Qs\bar{n}\bar{n}、QQ\bar{n}\bar{n}、QQ\bar{Q}\bar{Q}和ss\bar{s}\bar{s}（其中Q为粲夸克c或底夸克b，n为上夸克u或下夸克d）。除常规的H型构型外，我们还纳入所有K型雅可比坐标，通过随机参数生成策略优化基展开，并应用复标度方法识别束缚态与共振态。计算表明，对于T_{cc}(3875)^+这类低激发分子候选态，仅用常规H型构型即可满足需求；但要提取高激发共振态，必须纳入K型构型，这能识别出仅用H型构型计算时缺失的高能共振态。此外，我们还确定了T_{cs0}(2900)、X(6900)和X(7200)的共振候选态；而2.6 GeV以下全奇异紧致极点的缺失，对将φ(2170)和X(2370)解释为S波紧致ss\bar{s}\bar{s}四夸克的观点提出了挑战。
英文摘要
We systematically explore the $S$-wave tetraquark systems $Qs\bar{n}\bar{n}$, $QQ\bar{n}\bar{n}$, $QQ\bar{Q}\bar{Q}$, and $ss\bar{s}\bar{s}$ ($Q=c,b$; $n=u,d$) within the constituent quark potential model. We incorporate all K-type Jacobi coordinates in addition to the conventional H-type configurations, optimize the basis expansion via a stochastic parameter generation strategy, and apply the complex scaling method to identify bound and resonant states. Our calculations demonstrate that while conventional H-type configurations suffice for low-lying states such as the $T_{cc}(3875)^+$ molecular candidate, the inclusion of K-type configurations becomes important for extracting highly excited resonances, allowing higher-energy resonances absent in H-only calculations to be identified. Furthermore, we identify resonance candidates for the $T_{cs0}(2900)$, $X(6900)$, and $X(7200)$, whereas the absence of fully-strange compact poles below 2.6 GeV challenges the interpretation of $ϕ(2170)$ and $X(2370)$ as $S$-wave compact $s s \bar{s} \bar{s}$ tetraquarks.
Comments25 pages, 14 figures, 15 tables, comments are welcome
