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Observation of a narrow state decaying into XI(c)(+)pi(-)
Ammar, Raymond G. Baringer, Philip S. Bean, Alice Besson, David Zeke Coppage, Don Copty, N. Davis, Robin E. P. Hancock, N. Kotov, S. Kravchenko, I.
Ammar, Raymond G.
Baringer, Philip S.
Bean, Alice
Besson, David Zeke
Coppage, Don
Copty, N.
Davis, Robin E. P.
Hancock, N.
Kotov, S.
Kravchenko, I.
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Abstract
Using data recorded by the CLEO-II detector at Cornell Electron Storage Ring (CESR), we report the first observation of a narrow state decaying into Xi(c)(+) pi(-). The state has mass difference M(Xi(c)(+) pi(-)) - M(Xi(c)(+)) of 178.2 +/- 0.5 + 1.0 MeV/c(2), and a width of <5.5 MeV/c(2) (90% confidence level limit). The most likely explanation of this new state is that it is the Xi*(0)(c), the J(p) = 3/2+ spin excitation of the Xi(c)(0) charmed baryon.
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1995-12
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AMERICAN PHYSICAL SOC
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AVERY, P, FREYBERGER, A, et al. OBSERVATION OF A NARROW STATE DECAYING INTO XI(C)(+)PI(-). PHYSICAL REVIEW LETTERS. December 1995. 75(24) : 4364-4368