Radiative decay of ${\Xi }_b(6227)$ in a hadronic molecule picture

Abstract

The ${\Xi }_b(6227)$ baryon with the quantum number $J^P=1/2^{-}$ is considered as a molecular state composed of a ${\Sigma }_b$ baryon and $\bar{K}$ meson. The partial decay widths of the ${\Sigma }_b\bar{K}$ molecular state into ${\Xi }_b\gamma$ and ${\Xi }_b^{{}^{\prime }}\gamma$ final states through hadronic loops are evaluated with the help of the effective Lagrangians. The partial widths for the ${\Xi }_b(6227)\to \gamma {\Xi }_b$ and ${\Xi }_b(6227)\to \gamma {\Xi }_b^{{}^{\prime }}$ are evaluated to be about 1.50-1.02 KeV and 17.56-24.91 KeV, respectively, which may be accessible for the LHCb. Based on our results we argue that an experimental determination of the radiative decay width of ${\Xi }_b(6227)$ is important for the understanding of its intrinsic properties.

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Cited by in corpus (6)

• Observation of a new ${\Xi }_b^0$ state
• Strong decays of the low-lying bottom strange baryons
• Magnetic moment of the ${\Xi }_b(6227)$ as a molecular pentaquark state
• Toward establishing the low-lying $P$-wave excited ${\Sigma }_c$ baryon states
• A coupled-channel perspective analysis on bottom-strange molecular pentaquarks
• Probing the inner structures of the observed ${\Xi }_b$ and ${\Xi }_b^{\prime }$ resonances