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

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

1995-10-26

arxiv.org/abs/hep-ph/9510421v1

Phys.Rev.D54:3374-3376,1996

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages in REVTeX, no figures

Scientific paper

10.1103/PhysRevD.54.3374

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.

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