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Weak-Electromagnetic K-Meson Decays

R. F. Sarraga and H. J. Munczek

  • University of Kansas, Lawrence, Kansas 66044

Phys. Rev. D 4, 2884 – Published 1 November, 1971

DOI: https://doi.org/10.1103/PhysRevD.4.2884

Abstract

We discuss the contributions of the combined first-order-weak plus higher-order-electromagnetic effects to several K-meson decays. It is shown that if one uses a chiral SU(3) ×SU(3) pole model to explain both KS2π and KL2γ one needs an effective nonleptonic interaction Lagrangian which contains 8, and 27, ΔI=12 pieces. This gives results for K+π+ll¯ compatible with the experimental data. We also calculate within this model the real part of the KLll¯ amplitude, which results in a very small contribution to the decay rate.

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