标题： 第二壳底夸克重子的辐射衰变$Λ_b$和$Ξ_b$ 显示英文标题

标题： Radiative decays of the second shell $Λ_b$ and $Ξ_b$ bottom baryons

摘要： 在这项工作中，我们研究了属于味反三重态（$\mathbf{\bar{3}}_{\rm F}$）的底夸克重子$\Lambda_b$和$\Xi_b$的辐射衰变。在构成夸克模型的形式体系下，电磁跃迁是从第二壳层状态到基态和$P$波最终状态计算的。这些衰变在确认某些共振的存在方面起着关键作用。当强衰变不允许时，态的重建依赖于它们的电磁衰变通道。此外，当状态具有相同的质量和总衰变宽度时，电磁衰变宽度对于共振的识别尤其有用。本研究首次计算了$D_\rho$波态、$\rho-\lambda$混合态以及$\rho$模径向激发态的电磁衰变。在整个计算过程中，我们考虑了来自实验误差和模型相关误差的不确定性。 显示英文摘要

摘要： In this work, we investigate the radiative decays of the $\Lambda_b$ and $\Xi_b$ bottom baryons, which belong to the flavor anti-triplet ($\mathbf{\bar{3}}_{\rm F}$), within the constituent quark model formalism. The electromagnetic transitions are calculated from the second-shell states to both the ground and $P$-wave final states. These decays play a crucial role in confirming the existence of certain resonances. When strong decays are not allowed, the reconstruction of states relies on their electromagnetic decay channels. Moreover, electromagnetic decay widths are particularly useful for the identification of resonances when states have the same mass and total decay width. This study presents, for the first time, the calculation of electromagnetic decays for $D_\rho$-wave states, $\rho-\lambda$ mixed states, and $\rho$-mode radially excited states. Throughout our calculations, we account for uncertainties arising from both experimental and model-dependent errors.