论文标题
彩色单元单式五角夸夸夸的同胞特征状态
Isospin eigenstates of the color singlet-singlet type pentaquark states
论文作者
论文摘要
在本文中，我们使用Isospins $（i，i_3）=（\ frac {1} {2} {2}，\ frac {1} {2} {2}）$（\ frac {\ frac {3} {2} {2} {2} {2} {2}，\ frac {2}，\ frac {2}， $ \ bar {d}σ_c$，$ \ bar {d}σ_c^*$，$ \ bar {d}^*σ_c$和$ \ bar {d}^*σ_c^*σ_c^*$ pentaquark通过qccd sum the qccd sum pirst the $ \ bar，$ \ cd_________________________________________________与相应的物理介子或重子具有相同量子数的群集。数值结果支持分配$ P_C（4312）$，$ P_C（4380）$，$ P_C（4440）$和$ P_C（4457）$作为$ \ bar {d}σ_c$ $ \ bar {d}^*σ_c^*$ pentaquark带有isospin $ i = \ frac {1} {2} $。相应的$ \ bar {d}σ_c$，$ \ bar {d}σ_c^*$，$ \ bar {d}^*σ_c$和$ \ bar {d}^*σ_c^*σ_c^*$ pentaquark与isospin $ i = \ frac {3} $ somet fime fime flat fime at ista $ j/ψδ$不变质谱中的候选人将阐明$ p_c $状态的性质，并为区分颜色抗抗逆转录机 - 抗逆转录机 - 抗逆局类型和彩色单曲线类型pentlets pentaquark States提供贡献。
In this article, we construct the color singlet-singlet type five-quark currents with the isospins $(I,I_3)=(\frac{1}{2},\frac{1}{2})$ and $(\frac{3}{2},\frac{1}{2})$ unambiguously to explore the $\bar{D}Σ_c$, $\bar{D}Σ_c^*$, $\bar{D}^*Σ_c$ and $\bar{D}^*Σ_c^*$ pentaquark states via the QCD sum rules for the first time, where the $\bar{D}$, $Σ_c$, $\cdots$ represent the color-singlet clusters having the same quantum numbers as the corresponding physical mesons or baryons. The numerical results support assigning the $P_c(4312)$, $P_c(4380)$, $P_c(4440)$ and $P_c(4457)$ as the $\bar{D}Σ_c$, $\bar{D}Σ_c^*$, $\bar{D}^*Σ_c$ and $\bar{D}^*Σ_c^*$ pentaquark states with the isospin $I=\frac{1}{2}$, respectively. The corresponding $\bar{D}Σ_c$, $\bar{D}Σ_c^*$, $\bar{D}^*Σ_c$ and $\bar{D}^*Σ_c^*$ pentaquark states with the isospin $I=\frac{3}{2}$ have slightly larger masses, the observations of the higher pentaquark candidates in the $J/ψΔ$ invariant mass spectrum would shed light on the nature of the $P_c$ states, and make contributions in distinguishing the scenarios of color antitriplet-antitriplet-antitriplet type and color singlet-singlet type pentaquark states.
