Measurement of the lifetime of the doubly charmed baryon ${\Xi }_{cc}^{++}$

LHCb collaboration, R. Aaij, B. Adeva +832

The first measurement of the lifetime of the doubly charmed baryon ${\Xi }_{cc}^{++}$ is presented, with the signal reconstructed in the final state ${\Lambda }_c^{+}{K}^{-}{\pi }^{+}{\pi }^{+}$. The data sample…