论文标题
双链式七夸克状态由两个迷人的介子和一个核子组成
Double-charm heptaquark states composed of two charmed mesons and one nucleon
论文作者
论文摘要
受到$ t_ {cc} $，$σ_c（2800）$和$λ_C（2940）$的实验发现的启发，以及它们是$ dd^*$，$ dn $和$ d^*n $ dn $ solecular候选人的理论图片，我们调查了双重Charm heptaquark heptaquark heptaquark heptaquark hepa hempa hempa hempa hepa hempa hempa hempa hempa hempa hem hepta hepa hem heptaquark of $ dd^n $ n $ n $。我们采用一阶交换型号来推断成对的$ d $ - $ d^*$，$ d $ - $ n $和$ d^*$ - $ n $势，然后使用高斯扩展方法研究$ dd^*n $系统。我们发现两个具有$ i（j^p）= \ frac {1} {2} {2}（\ frac {1} {1} {2}^ - ）$和$ \ frac {1} {1} {2} {2} {2}（\ frac {3} {2} {2}^ - ）$ DD^n $的$ i（j^p）候选者（\ frac {1} {2}^ - ）$和$ \ frac {2} {2}即使考虑到$ s $ -D $混合和耦合的频道效果，结论仍然保持不变。除了提供结合能，我们还计算了$ dd^*n $系统的根平方半径，该半径进一步支持了预测状态的分子性质。可以在即将到来的LHC运行3并运行4处搜索它们。
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.
