论文标题
$ p_ {cs}（4459）$作为带有QCD和规则的隐藏式pentaquark状态的分析
Analysis of the $P_{cs}(4459)$ as the hidden-charm pentaquark state with QCD sum rules
论文作者
论文摘要
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} $从LHCB协作中，并支持分配$ p_ {cs}（4459）$，是带有spin-parity $ j^p =^p =^p = {\ frac {\ frac {\ frac} = {1}的隐藏charm pentaquark状态。我们考虑了风味$ su（3）$破坏质量的效果，并估算了diquark-diquark-antiquark型$ udsc \ bar {c} $ pentaquark c $ s = -1 $的质谱。
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 $S=-1$.
