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arXiv · 2302.04733

Observation of new $Ω_c^{0}$ states decaying to the $Ξ_c^+K^-$ final state

LHCb collaboration
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Abstract

Two new excited states, $Ω_c(3185)^0$ and $Ω_c(3327)^0$, are observed in the $Ξ_c^{+}K^{-}$ invariant-mass spectrum using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of $9\,{\rm fb}^{-1}$. Five previously observed excited $Ω_c^0$ states are confirmed, namely $Ω_c(3000)^0$, $Ω_c(3050)^0$, $Ω_c(3065)^0$, $Ω_c(3090)^0$, and $Ω_c(3119)^0$. The masses and widths of these seven states are measured with the highest precision to date.

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LHCb collaboration. 2023-10-22. Observation of new $Ω_c^{0}$ states decaying to the $Ξ_c^+K^-$ final state. https://doi.org/10.1103/physrevlett.131.131902

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