K -> pi pi and a light scalar meson
Nuclear Theory
2009-01-14 v1 High Energy Physics - Experiment
High Energy Physics - Phenomenology
Abstract
We explore the Delta-I= 1/2 rule and epsilon'/epsilon in K -> pi pi transitions using a Dyson-Schwinger equation model. Exploiting the feature that QCD penguin operators direct K^0_S transitions through 0^{++} intermediate states, we find an explanation of the enhancement of I=0 K -> pi pi transitions in the contribution of a light sigma-meson. This mechanism also affects epsilon'/epsilon.
Keywords
Cite
@article{arxiv.nucl-th/9910029,
title = {K -> pi pi and a light scalar meson},
author = {J. C. R. Bloch and M. A. Ivanov and T. Mizutani and C. D. Roberts and S. M. Schmidt},
journal= {arXiv preprint arXiv:nucl-th/9910029},
year = {2009}
}
Comments
7 pages, REVTEX