K+ₗ₃ᵧ decays revisited: branching ratios and T-odd momenta correlations

الأصل · EN

We calculate the branching ratios of the K+ → π⁰ l+ νₗγ(l = e, μ) decays, and the T-odd triple momenta correlations ξ=q·[pₗ × pπ]/M³ₖ, due to the electromagnetic final state interaction, in these processes. The contributions on the order of ω⁻¹ and ω⁰ to the corresponding amplitudes are treated exactly. For the branching ratios, the corrections on the order of ω are estimated and demonstrated to be small. We compare the results with those of other authors. In some cases our results differ considerably from the previous ones.