Observation of the doubly-charmed-baryon decay ${\Xi }_{cc}^{++}\to {\Xi }_c^0{\pi }^{+}{\pi }^{+}$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1134

A search for the doubly-charmed-baryon decay ${\Xi }_{cc}^{++}\to {\Xi }_c^0{\pi }^{+}{\pi }^{+}$ is performed using proton-proton collision data collected by the LHCb experiment at a c…