ANALYSIS OF NONLEPTONIC KAON DECAYS USING CHIRAL-LOOP EXPANSION

10 August 1992

journal article
Published by World Scientific Pub Co Pte Ltd in International Journal of Modern Physics A

Vol. 7 (20) , 4757-4789
https://doi.org/10.1142/s0217751x92002155

Abstract

The amplitudes of the decays K→2π and K→3π have been calculated within the chiral Lagrangian approach including chiral loops. The phenomenological structure of the effective weak meson interaction has then been fixed by experimental data. We estimate the CP asymmetry for decay probabilities and slope parameters in K^±→π^±π^±π^∓ and K^±→π⁰π⁰π^± decays using data on Re(ε′/ε). The modification of the Li-Wolfenstein relation for the direct CP-violation parameter in decays is also discussed.

Keywords

CROSS SECTION
INVARIANCE PRINCIPLE
CP VIOLATION
THREE BODY PROBLEM
ELEMENTARY PARTICLES

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