Using a [Formula Presented] data sample collected with the CLEO II and II.V detectors, we report new branching fraction measurements for two Cabibbo-suppressed decay modes of the [Formula Presented] meson: [Formula Presented] and [Formula Presented] which are significant improvements over past measurements. The errors reflect statistical and systematical uncertainties as well as the uncertainty in the absolute [Formula Presented] branching fraction scale. We also set the first 90% confidence level upper limit on the branching fraction of the doubly Cabibbo-suppressed decay mode [Formula Presented].

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Journal Physical Review D - Particles, Fields, Gravitation and Cosmology
Arms, K. (K.), Eckhart, E. (E.), Gan, K.K. (K. K.), Gwon, C. (C.), Honscheid, K. (K.), Kass, R. (R.), … Ernst, J. (J.). (2004). Cabibbo-suppressed decays of [Formula Presented]. Physical Review D - Particles, Fields, Gravitation and Cosmology, 69(7). doi:10.1103/PhysRevD.69.071102