Isospin violation in epsilon'
High Energy Physics - Phenomenology
2009-11-10 v1
Abstract
On the basis of a next-to-leading-order calculation in chiral perturbation theory, the first complete analysis of isospin breaking for direct CP violation in K^0 -> 2 pi decays is performed. We find a destructive interference between three different sources of isospin violation in the CP violation parameter epsilon'. Within the uncertainties of large-N_c estimates for the low-energy constants, the isospin violating correction for epsilon' is below 15 %.
Cite
@article{arxiv.hep-ph/0307030,
title = {Isospin violation in epsilon'},
author = {V. Cirigliano and A. Pich and G. Ecker and H. Neufeld},
journal= {arXiv preprint arXiv:hep-ph/0307030},
year = {2009}
}
Comments
4 pages