Hidden charm pentaquark and $\Lambda (1405)$ in the ${\Lambda }_b^0\to {\eta }_c{K}^{-}p(\pi \Sigma )$ reaction

Ju-Jun Xie, Wei-Hong Liang, Eulogio Oset

We have performed a study of the ${\Lambda }_b^0\to {\eta }_c{K}^{-}p$ and ${\Lambda }_b^0\to {\eta }_c\pi \Sigma$ reactions based on the dominant Cabibbo favored weak decay mechanism. We show that the $K^{-}p$ produce…