Observation of two new excited ${\Xi }_b^0$ states decaying to ${\Lambda }_b^0{K}^{-}{\pi }^{+}$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +995

Two narrow resonant states are observed in the ${\Lambda }_b^0{K}^{-}{\pi }^{+}$ mass spectrum using a data sample of proton-proton collisions at a center-of-mass energy of 13$\mathrm{TeV}$, collect…