标题： 关于$Δ_{5/2^{+}}(2000)$谜题的新视角 显示英文标题

标题： A new perspective on the $Δ_{5/2^{+}}(2000)$ puzzle

摘要： 我们认为应该将粒子数据手册（PDG）中列为共振态的$\Delta_{5/2^{+}}(2000)(\ast\ast),$解释为两个不同的共振态，即$\Delta_{5/2^{+}}(\sim1740)$和$\Delta_{5/2^{+}}(\sim2200)$。我们的论点基于固定中心近似（FCA）下解决$\pi\Delta\rho$问题的方法。在此基础上，$\Delta_{5/2^{+}}(\sim1740)$可以被解释为一个$\pi-(\Delta \rho)_{N(1675)}$的束缚态。 作为推论，$\Delta_{1/2^{+}}(1750)(\ast)$可以被理解为一个$\pi N_{1/2^{-}}(1650)$结合态。 显示英文摘要

摘要： We argue that $\Delta_{5/2^{+}}(2000)(\ast\ast),$ cataloged as a resonance in the Particle Data Book Review (PDG), should be interpreted instead as two distinctive resonances, $\Delta_{5/2^{+}}(\sim1740)$ and $\Delta_{5/2^{+}}(\sim2200)$. Our argument is based on a solution of the $\pi\Delta\rho$ problem in a Fixed Center Approximation (FCA) to the Fadeev equations. $\Delta_{5/2^{+}}(\sim1740)$ can then be interpreted as a $\pi-(\Delta \rho)_{N(1675)}$ bound state. As a corollary $\Delta_{1/2^{+}}(1750)(\ast)$ can be understood as a $\pi N_{1/2^{-}}(1650)$ bound state.