Observation of the Singly Cabibbo-Suppressed Decay ${\Lambda }_c^{+}\to n{\pi }^{+}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +511

The singly Cabibbo-suppressed decay ${\Lambda }_c^{+}\to n{\pi }^{+}$ is observed for the first time with a statistical significance of $7.3\sigma$ by using 3.9 ${\mathrm{fb}}^{-1}$ of $e^{+}{e}^{-}$…