Title

KAON DECAYS AND A DETERMINATION OF THE SCALE OF CHIRAL SYMMETRY

Publication Date

1984

Journal or Book Title

PHYSICAL REVIEW D

Abstract

Using effective chiral Lagrangians, we consider the occurrence of quadratic terms in the ΔI=1/2 K→3π matrix element. The inclusion of higher-derivative Lagrangians leads to a significant improvement over the usual current-algebra analysis. This allows an extraction directly from experimental data of Λχ, a measure of the scale of chiral symmetry. We give an operational definition of the chiral scale, and find Λχ≈1 GeV. The issue of uncertainty in the phenomenological determination of the B parameter is clarified.

Comments

Published version is located at http://prd.aps.org/abstract/PRD/v30/i3/p587_1

Volume

30

Pages

587-593

Issue

3

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