Observation of Two Excited Charmed Baryons Decaying into Λc+π±

G. Brandenburg et al. (CLEO Collaboration)
Phys. Rev. Lett. 78, 2304 – Published 24 March 1997
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Abstract

Using data recorded by the CLEO-II detector at CESR, we report evidence of a pair of excited charmed baryons, one decaying into Λc+π+ and the other into Λc+π. The doubly charged state has a measured mass difference M(Λc+π+)M(Λc+) of 234.5±1.1±0.8 MeV/c2 and a width of 17.93.2+3.8±4.0MeV/c2, and the neutral state has a measured mass difference M(Λc+π)M(Λc+) of 232.6±1.0±0.8 MeV/c2 and a width of 13.03.0+3.7±4.0MeV/c2. We interpret these data as evidence of the Σc*++ and Σc*0, the spin 32+ excitations of the Σc baryons.

  • Received 26 September 1996

DOI:https://doi.org/10.1103/PhysRevLett.78.2304

©1997 American Physical Society

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Vol. 78, Iss. 12 — 24 March 1997

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