论文标题
建立第一个隐藏式五角夸夸克
Establishing the first hidden-charm pentaquark with strangeness
论文作者
论文摘要
我们使用QCD Sum规则的方法研究了LHCB最近观察到的$ P_ {CS}（4459）^0 $。我们的结果支持其解释为$ \ bar d^*ξ_c$ HADRONIC分子状态的$ J^p = 1/2^ - $或$ 3/2^ - $。在HADRONIC分子图片中，观察$ P_C $和$ P_ {CS} $状态的三个LHCB实验\ cite {lhcb，aaij：2015tga，aaij：aaij：2019vzc}可以很好地理解。这很大程度上支持了Hadronic分子的存在，它们的研究可以显着提高我们对亚原子世界的建设的理解。为了验证这张图片，我们建议进一步研究$ p_ {cs}（4459）^0 $，以检查它是否可以分为两个状态，并搜索$ \ bar dξ_c$ $ j^p = 1/2^ - $。
We study the $P_{cs}(4459)^0$ recently observed by LHCb using the method of QCD sum rules. Our results support its interpretation as the $\bar D^* Ξ_c$ hadronic molecular state of either $J^P=1/2^-$ or $3/2^-$. Within the hadronic molecular picture, the three LHCb experiments observing $P_c$ and $P_{cs}$ states \cite{lhcb,Aaij:2015tga,Aaij:2019vzc} can be well understood as a whole. This strongly supports the existence of hadronic molecules, whose studies can significantly improve our understanding on the construction of the subatomic world. To verify this picture, we propose to further investigate the $P_{cs}(4459)^0$ to examine whether it can be separated into two states, and to search for the $\bar D Ξ_c$ molecular state of $J^P=1/2^-$.
