A Measurement Of B(D(S)+-]Phi-L+Nu)/B(D(S)+-]Phi-Pi+)

F. Butler,X. Fu,G. Kalbfleisch,W. R. Ross, P. Skubic, J. Snow,P. L. Wang,M. Wood,D. N. Brown,J. Fast

PHYSICS LETTERS B（1994）

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Abstract

Using the CLEO II detector at CESR, we have measured the ratio of branching fractions B(D(s)+ --> phie+nu)/B(D(s)+ --> phipi+) = 0.54 +/- 0.05 +/- 0.04. We use this measurement to obtain a model dependent estimate of B(D(s)+ --> phipi+).

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