KAON DECAYS AND A DETERMINATION OF THE SCALE OF CHIRAL SYMMETRY

Authors

JF Donoghue, University of Massachusetts AmherstFollow
Eugene Golowich, University of Massachusetts - AmherstFollow
BR Holstein, University of Massachusetts AmherstFollow

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

Pages

587-593

Volume

30

Issue

3

Recommended Citation

Donoghue, JF; Golowich, Eugene; and Holstein, BR, "KAON DECAYS AND A DETERMINATION OF THE SCALE OF CHIRAL SYMMETRY" (1984). PHYSICAL REVIEW D. 207.
Retrieved from https://scholarworks.umass.edu/physics_faculty_pubs/207