Observation of New States Decaying into Lambdac+pi-pi+
Abstract
Using 13.7 fb-1 of data recorded by the CLEO detector at CESR, we investigate the spectrum of charmed baryons which decay into Lambdac+ pi- pi+ and are more massive than the Lambdac1 baryons. We find evidence for two new states: one is broad and has an invariant mass roughly 480 MeV above that of the Lambdac+; the other is narrow with an invariant mass of 596 +- 1 +- 2 MeV above the Lambdac+ mass. These results are preliminary.
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