The ${\mathrm{\Xi }}_c^{+}{K}^{-}$ mass spectrum is studied with a sample of $p$$p$ collision data corresponding to an integrated luminosity of $3.3{\mathrm{fb}}^{-1}$, collected by the LHCb experiment. The ${\mathrm{\Xi }}_c^{+}$ is reconstructed in the decay mode $p{K}^{-}{\pi }^{+}$. Five new, narrow excited ${\mathrm{\Omega }}_c^0$ states are observed: the ${\mathrm{\Omega }}_c(3000{)}^0$, ${\mathrm{\Omega }}_c(3050{)}^0$, ${\mathrm{\Omega }}_c(3066{)}^0$, ${\mathrm{\Omega }}_c(3090{)}^0$, and ${\mathrm{\Omega }}_c(3119{)}^0$. Measurements of their masses and widths are reported.

• Received 14 March 2017

DOI:https://doi.org/10.1103/PhysRevLett.118.182001

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© 2017 CERN, for the LHCb Collaboration