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 2206.04586hep-phhep-ex
收藏

由两个粲介子和一个核子组成的双粲七夸克态

Double-charm heptaquark states composed of two charmed mesons and one nucleon

Si-Qiang Luo, Li-Sheng Geng, Xiang Liu

摘要:

受$T_{cc}$、$Σ_c(2800)$和$Λ_c(2940)$的实验发现以及它们是$DD^*$、$DN$和$D^*N$分子候选者的理论图景的启发,我们研究了$DD^*N$的双粲七夸克体系.我们利用单玻色子交换模型推导出了$D^*$、$D$-$N$和$D^*$势,然后用高斯展开方法研究了$DD^*N$系统.我们发现了两个很好的强子分子候选者,$I(J^P)=\frac{1}{2}(\frac{1}{2}^-)$和$\frac{1}{2}(\frac{3}{2}^-)$ $DD^*N$只有$s$波对相互作用。即使考虑到$S$-$D$混合和耦合通道效应,结论也保持不变。除了提供结合能,我们还计算了$DD^*N$系统的均方根半径,这进一步支持了预测状态的分子性质。它们可以在即将到来的LHC运行3和运行4中搜索。

英文摘要:

Inspired by the experimental discoveries of $T_{cc}$, $Σ_c(2800)$, and $Λ_c(2940)$ and the theoretical picture where they are $DD^*$, $DN$, and $D^*N$ molecular candidates, we investigate the double charm heptaquark system of $DD^*N$. We employ the one-boson-exchange model to deduce the pairwise $D$-$D^*$, $D$-$N$, and $D^*$-$N$ potentials and then study the $DD^*N$ system with the Gaussian expansion method. We find two good hadronic molecular candidates with $I(J^P)=\frac{1}{2}(\frac{1}{2}^-)$ and $\frac{1}{2}(\frac{3}{2}^-)$ $DD^*N$ with only $s$-wave pairwise interactions. The conclusion remains unchanged even taking into account the $S$-$D$ mixing and coupled channel effects. In addition to providing the binding energies, we also calculate the root-mean-square radii of the $DD^*N$ system, which further support the molecular nature of the predicted states. They can be searched for at the upcoming LHC run 3 and run 4.

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。

↑