Title

Observation of two excited charmed baryons decaying into Λ+cπ±

Document Type

Article

Publication Date

1-1-1997

Abstract

Using data recorded by the CLEO-II detector at CESR, we report evidence of a pair of excited charmed baryons, one decaying into λ π and the other into λ π . The doubly charged state has a measured mass difference M(λ π )- M(λ ) of 234.5 ± 1.1 ± 0.8 MeV/c and a width of 17.9 ± 4.0 MeV/c , and the neutral state has a measured mass difference M (λ π )-M (λ ) of 232.6 ± 1.0 ± 0.8 MeV/c and a width of 13.0 ± 4.0 MeV/c . We interpret these data as evidence of the Σ and Σ the spin 3/2 excitations of the Σ baryons. © 1997 The American Physical Society. + + + - + + + 2 +3.8 2 + + + 2 +3.7 2 *++ *0 + c c c c -3.2 c c -3.0 c c c

Publication Name

Physical Review Letters

Volume Number

78

First Page

2304

Last Page

2308

Issue Number

12

DOI

10.1103/PhysRevLett.78.2304

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