We have searched for the baryon-containing radiative penguin decays [Formula Presented] and [Formula Presented] using a sample of [Formula Presented] [Formula Presented] events collected at the [Formula Presented] with the CLEO detector. We find no evidence for either, and set 90% confidence level upper limits of [Formula Presented] [Formula Presented] From the latter, we estimate [Formula Presented] This limit implies upper limits on corrections to CLEO’s recent measurement of branching fraction, mean photon energy, and variance in photon energy from [Formula Presented] that are less than half the combined statistical and systematic errors quoted on these quantities.

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Persistent URL dx.doi.org/10.1103/PhysRevD.68.011102
Journal Physical Review D - Particles, Fields, Gravitation and Cosmology
Edwards, K.W. (K. W.), Besson, D. (D.), Anderson, S. (S.), Frolov, V.V. (V. V.), Gong, D.T. (D. T.), Kubota, Y. (Y.), … Williams, J. (J.). (2003). Search for baryons in the radiative penguin decay [Formula Presented]. Physical Review D - Particles, Fields, Gravitation and Cosmology, 68(1). doi:10.1103/PhysRevD.68.011102