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Observation of $$\Xi _{c}(2930)^0$$ Ξ c ( 2930 ) 0 and updated measurement of $$B^{-} \rightarrow K^{-} \Lambda _{c}^{+} \bar{\Lambda }_{c}^{-}$$ B - → K - Λ c + Λ ¯ c - at Belle
We report the first observation of the $$\Xi _{c}(2930)^0$$ charmed-strange baryon with a significance greater than 5 $$\sigma $$ . The $$\Xi _{c}(2930)^0$$ is found in its decay to $$K^- \Lambda _{c}^+$$ in $$B^{-} \rightarrow K^{-} \Lambda _{c}^{+} \bar{\Lambda }_{c}^{-}$$ decays. The measured mass and width are $$[2928.9 \pm 3.0(\mathrm …