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Using 13.7fb−1 of data recorded by the CLEO detector at Cornell Electron Storage Ring, we report evidence of two new charmed baryons: one decaying into Ξc0′π+ with the subsequent decay Ξc0′→Ξc0γ, and its isospin partner decaying into Ξc+′π− followed by Ξc+′→Ξc+γ. We measure the following mass differences for the two …