论文标题
由双重迷人的四夸克州和一个迷人的梅森组成
Hadronic molecules composed of a doubly charmed tetraquark state and a charmed meson
论文作者
论文摘要
由LHCB合作在2019年发现的三个Pentaquark州，$ P_C（4312）$，$ P_C（4440）$和$ P_C（4457）$ $ \ bar {d}^{（\ ast）}σ_{c}^{（\ ast）} $。在重夸克质量限制中，$σ_{c}^{（\ ast）} $ baryons可以与Isospin 1的双重迷人的四夸克州有关，即$ t _ {\ bar {c}美元$ \ bar {d}^{（\ ast）}σ_{c}^{（\ ast）} $交互与$ \ bar {d}^{（\ ast）} t _ {\ bar {\ bar {c} \ bar {c} \ akark {对称}断裂。 In this work, we employ the contact-range effective field theory to systematically study the $\bar{D}^{(\ast)}T_{\bar{c}\bar{c}}^{(\ast)}$ systems, and we show the existence of a complete heavy quark spin symmetry multiplet of hadronic molecules composed of a doubly charmed tetraquark state and一个迷人的梅森。这些是一种新型的Hadronic分子，如果被发现，可以更好地了解迄今为止发现的许多异国情调的Hadron。此外，我们总结了由不同的Hadron组合形成的三个三重迷人的六角洲国家。特别是，我们表明$ \barΩ_{ccc} {p} $系统可以通过库仑力绑定，库仑力类似于氢气原子。
The three pentaquark states, $P_c(4312)$, $P_c(4440)$ and $P_c(4457)$, discovered by the LHCb Collaboration in 2019, can be arranged into a complete heavy quark spin symmetry multiplet of hadronic molecules of $\bar{D}^{(\ast)}Σ_{c}^{(\ast)}$. In the heavy quark mass limit, the $Σ_{c}^{(\ast)}$ baryons can be related to the doubly charmed tetraquark states of isospin 1, i.e., $T_{\bar{c}\bar{c}}^{(\ast)}$( $T_{\bar{c}\bar{c}}^{0}$, $T_{\bar{c}\bar{c}}^{1}$, $T_{\bar{c}\bar{c}}^{2}$), via heavy antiquark diquark symmetry, which dictates that the $\bar{D}^{(\ast)}Σ_{c}^{(\ast)}$ interactions are the same as the $\bar{D}^{(\ast)}T_{\bar{c}\bar{c}}^{(\ast)}$ interactions up to { heavy antiquark diquark symmetry} breakings. In this work, we employ the contact-range effective field theory to systematically study the $\bar{D}^{(\ast)}T_{\bar{c}\bar{c}}^{(\ast)}$ systems, and we show the existence of a complete heavy quark spin symmetry multiplet of hadronic molecules composed of a doubly charmed tetraquark state and a charmed meson. These are a new kind of hadronic molecules and, if discovered, can lead to a better understanding of the many exotic hadrons discovered so far. In addition, we summarise the triply charmed hexaquark states formed by different combinations of hadrons. In particular, we show that $\barΩ_{ccc}{p}$ system can bind by the Coulomb force, which is analogous to a hydrogenlike atom.
