标题： $P_{cs}(4459)$的隐含魅夸克五夸克态的 QCD 求和规则分析 显示英文标题

标题： Analysis of the $P_{cs}(4459)$ as the hidden-charm pentaquark state with QCD sum rules

摘要： 在本文中，我们研究了标量-二夸克-标量-二夸克-反夸克类型的$udsc\bar{c}$五夸克态，利用QCD求和规则，预测的质量$M_P=4.47\pm0.11\,\rm{GeV}$与LHCb合作组的实验数据$ 4458.8 \pm 2.9 {}^{+4.7}_{-1.1} \mbox{ MeV}$非常一致，并支持将$P_{cs}(4459)$分配为具有自旋宇称$J^P={\frac{1}{2}}^-$的隐含 charm 五夸克态。 我们考虑味$SU(3)$质量破缺效应，并估计具有奇异数$S=-1$的二夸克-二夸克-反夸克型$udsc\bar{c}$五夸克态的质量谱。 显示英文摘要

摘要： In this article, we study the scalar-diquark-scalar-diquark-antiquark type $udsc\bar{c}$ pentaquark state with the QCD sum rules, the predicted mass $M_P=4.47\pm0.11\,\rm{GeV}$ is in excellent agreement with the experimental data $ 4458.8 \pm 2.9 {}^{+4.7}_{-1.1} \mbox{ MeV}$ from the LHCb collaboration, and supports assigning the $P_{cs}(4459)$ to be the hidden-charm pentaquark state with the spin-parity $J^P={\frac{1}{2}}^-$. We take into account the flavor $SU(3)$ mass-breaking effect, and estimate the mass spectrum of the diquark-diquark-antiquark type $udsc\bar{c}$ pentaquark states with the strangeness $S=-1$.