论文标题
与手性合作伙伴结构相关的五夸克国家
Pentaquark states from bound state approach with chiral partner structure
论文作者
论文摘要
观察两个状态$ p_c（4380）$和$ p_c（4445）$ [phys.rev.lett。 115（2015）072001]固体自然界存在五夸克州的存在。在这项工作中，我们通过在有效的拉格朗日方法中将重型介子与核子作为孤子结合到核子，研究五夸克状态的光谱，包括一两个重夸克。关于$ h $ doublet和$ g $ doublet作为手性伙伴的彼此的手性伙伴，并将它们耦合到用最小的衍生产品点亮的介体，计算了五夸克州的手性伴侣结构。我们发现，边界的方法更喜欢安排$ p_c^+（4440）$和$ p_c（4457）$中的重型夸克doublet $（\ frac {1} {2} {2}^ - ，\ frac {3} {3} {2} {2}^ - ）这项工作中显示的预测光谱是对更多五夸克州实验狩猎的指南。
The observation of the two states $P_c(4380)$ and $P_c(4445)$ [Phys.Rev.Lett. 115 (2015) 072001] solids the existence of the pentaquark state in Nature. In this work, we study the spectrum of the pentaquark states including one or two heavy quarks based on the bound state approach by binding the heavy-light mesons to the nucleon as a soliton in an effective Lagrangian approach. By regarding the $H$ doublet and $G$ doublet as chiral partners to each other and coupling them to light mesons with a minimal derivative, the chiral partner structure of the pentaquark states is calculated. We find that the bound state approach prefers to arrange $P_c^+(4440)$ and $P_c(4457)$ into a heavy quark doublet $(\frac{1}{2}^-,\frac{3}{2}^-)$ so both decay to $J/ψp$ through the $S$-wave. The predicted spectrum shown in this work serves as a guide for the experimental hunting of more pentaquark states.
