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Study of the decays lambda(c)+ -> Xi(0)K+, Lambda(c)+ -> Sigma +K +K-, and Lambda(c)+ -> Xi- K+ pi-
Ammar, Raymond G. Ball, S. Baringer, Philip S. Coppage, Don Copty, N. Davis, Robin E. P. Hancock, N. Kelly, M. Kwak, Nowhan Lam, H.
Ammar, Raymond G.
Ball, S.
Baringer, Philip S.
Coppage, Don
Copty, N.
Davis, Robin E. P.
Hancock, N.
Kelly, M.
Kwak, Nowhan
Lam, H.
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Abstract
We report the measurement of new modes of the charmed baryon LAMBDA(c)+ using data recorded by the CLEO II detector at the Cornell Electron Storage Ring. We find branching ratios, relative to LAMBDA(c)+ --> pK-pi+, of 0.070 +/- 0.011 +/- 0.011 for LAMBDA(c)+ --> SIGMA+K+K-, 0.069 +/- 0.023 +/- 0.016 for LAMBDA(c)+ --> SIGMAphi, 0.078 +/- 0.013 +/- 0.013 for LAMBDA(c)+ --> XI0K+, and 0.053 +/- 0.016 +/- 0.010 for LAMBDA(c)+ --> XI*0K+. These measurements indicate that W-exchange diagrams contribute to LAMBDA(c)+ decay. We have also made a new measurement of the previously found mode LAMBDA(c)+ --> XI-K+pi+.
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1993-10
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AMERICAN PHYSICAL SOC
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AVERY, P, FREYBERGER, A, et al. Study of the decays lambda(c)+ -> Xi(0)K+, Lambda(c)+ -> Sigma +K +K-, and Lambda(c)+ -> Xi- K+ pi-. PHYSICAL REVIEW LETTERS. October 1993. 71(15) : 2391-2395