Coupling Constant $g_{{\Lambda }_b{B}_s\Lambda }$ using the Baryonic ${\bar{B}}_s^0\to p\bar{\Lambda }{K}^{-}$ Decay

Abstract

We study the three-body baryonic B decay ${\bar{B}}_s^0\to p\bar{\Lambda }{K}^{-}$ within the framework of the pole model via the baryonic ${\Lambda }_b$ pole. In our calculation, we require the strong coupling constant $g_{{\Lambda }_b{B}_s\Lambda }$ and investigate if $g_{{\Lambda }_b{B}_s\Lambda }=10.49\pm 1.57$ is adopted, the branching ratio agrees with the experimental result, reported by the LHCb collaboration.