Observation of New States Decaying into Lambda_c^+pi-pi+

Details Observation of New States Decaying into Lambda_c^+pi-pi+ Observation of New States Decaying into Lambda_c^+pi-pi+

2000-07-24

arxiv.org/abs/hep-ex/0007049v2

Physics

High Energy Physics

High Energy Physics - Experiment

Contributed to XXXth International Conference on High Energy Physics, July 2000, Osaka, Japan

Scientific paper

Using 13.7 fb^{-1} of data recorded by the CLEO detector at CESR, we investigate the spectrum of charmed baryons which decay into Lambda_c^+ pi^- pi^+ and are more massive than the Lambda_{c1} baryons. We find evidence for two new states: one is broad and has an invariant mass roughly 480 MeV above that of the Lambda_c^+; the other is narrow with an invariant mass of 596 +- 1 +- 2 MeV above the Lambda_c^+ mass. These results are preliminary.

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