Observation of the decay ${\Lambda }_b^0\to \psi (2S)p{\pi }^{-}$

LHCb collaboration, R. Aaij, B. Adeva +834

The Cabibbo-suppressed decay ${\Lambda }_b^0\to \psi (2S)p{\pi }^{-}$ is observed for the first time using a data sample collected by the LHCb experiment in proton-proton collisions correspondi…