Epsilon'/Epsilon in the Standard Model: Theoretical Update
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
A complete analysis of isospin breaking in K to 2 pion amplitudes, including both strong and electromagnetic corrections at next-to-leading order in chiral perturbation theory, has been achieved recently.We discuss the implication of these effects, together with the previously known chiral loop corrections, on the direct CP-violating ratio epsilon'/epsilon. One finds Re(epsilon'/epsilon) = (19^{+11}_{-9}) 10^{-4}.
Cite
@article{arxiv.hep-ph/0410215,
title = {Epsilon'/Epsilon in the Standard Model: Theoretical Update},
author = {A. Pich},
journal= {arXiv preprint arXiv:hep-ph/0410215},
year = {2007}
}
Comments
4 pages. Proceedings ICHEP'04, Beijing, China, 16-22 August 2004