标题： 激发的$Λ_Q$重子的辐射衰变在束缚态图像中 显示英文标题

标题： Radiative Decays of Excited $Λ_Q$ Baryons in the Bound State Picture

摘要： 在束缚态图像中，$\Lambda_c(2593) \to\Lambda_c\gamma$和$\Lambda_c(2625)\to\Lambda_c\gamma$的衰变被严重抑制。 另一方面，它们的底夸克对应态，分别被预测具有 5900 和 5926 MeV 的质量，可能具有显著的辐射分支比。 特别是，$\Lambda_b(5926)\to\Lambda_b\gamma$模式甚至可能超过强子衰变模式。 等价电荷允许的$\Lambda^{**}_Q\to\Sigma_Q\gamma$模式预计会很小。 显示英文摘要

摘要： It is shown that, in the bound state picture, the $\Lambda_c(2593) \to\Lambda_c\gamma$ and $\Lambda_c(2625)\to\Lambda_c\gamma$ decays are severely suppressed. On the other hand, for their bottom counterparts, which are predicted to have masses 5900 and 5926 MeV respectively, may have significant radiative branching ratio. In particular, the $\Lambda_b(5926)\to\Lambda_b\gamma$ mode may even dominate over the strong decay mode. The isospin allowed $\Lambda^{**}_Q\to\Sigma_Q\gamma$ mode is expected to be small.