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The process Ω→γΞ as a possible test of the penguin diagram

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Zeitschrift für Physik C Particles and Fields

Abstract

It is argued that Ω→γΞ is a convenient process for testing the ΔS=1 penguin diagram. The analysis is based on the standard pole model, including negative parity resonances. Using bag model matrix elements and standard values of the penguin operator coefficients, it is found that the branching ratio for Ω→γΞ is of order 10−5 to 10−4. The weak matrix element for Ω→γΞ estimated by means of soft pion and current algebra techniques is found to be ∼7 times bigger than the corresponding bag model result. This implies a branching ratio close to the experimental upper limit if standard values of the penguin coefficients are used.

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  1. Institute of Physics, University of Oslo, Blindern, Oslo 3, Norway

    J. O. Eeg

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Eeg, J.O. The process Ω→γΞ as a possible test of the penguin diagram. Z. Phys. C - Particles and Fields 21, 253–263 (1984). https://doi.org/10.1007/BF01577039

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