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Form-factor ratio measurement in lambda(+)(c)-]lambda-e(+)nu(e)
Ammar, Raymond G. Baringer, Philip S. Bean, Alice Besson, David Zeke Coppage, Don Copty, N. Davis, Robin E. P. Hancock, N. Kelly, M. Kotov, S.
Ammar, Raymond G.
Baringer, Philip S.
Bean, Alice
Besson, David Zeke
Coppage, Don
Copty, N.
Davis, Robin E. P.
Hancock, N.
Kelly, M.
Kotov, S.
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Abstract
The angular distributions of the decay Lambda(c)(+) --> Lambda e(+)nu(e) have been studied using the CLEO II detector. By performing a three-dimensional maximum likelihood fit, the form factor ratio R = f(2)/f(1) is determined to be -0.25 +/- 0.14 +/- 0.08. The decay asymmetry parameter of the Lambda(c) averaged over q(2) is calculated to be alpha(Lambda c) = -0.82(-0.06-0.03)(+0.09+0.06) .
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1995-07
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AMERICAN PHYSICAL SOC
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CRAWFORD, G, DAUBENMIER, CM, et al. FORM-FACTOR RATIO MEASUREMENT IN LAMBDA(+)(C)-]LAMBDA-E(+)NU(E). PHYSICAL REVIEW LETTERS. July 1995. 75(4) ; 624-628