Weakly-induced strong CP-violation
High Energy Physics - Phenomenology
2012-09-19 v2 High Energy Physics - Experiment
Abstract
Weak interaction contributions to the strong theta parameter are revisited in the frame of a large-Nc Chiral Perturbation Theory. Focusing on the hadronic (eta,etaprime) \to pi pi amplitudes, we express these second-order corrections in terms of the CP-violating parameter in K \to pi pi decays to obtain Delta_w(theta) approx 10^{-17} at O(GF^2 epsilonprime).
Keywords
Cite
@article{arxiv.1206.0914,
title = {Weakly-induced strong CP-violation},
author = {J. M. Gerard and P. Mertens},
journal= {arXiv preprint arXiv:1206.0914},
year = {2012}
}
Comments
11 pages, 1 figure. One reference and comments on electroweak corrections added. Version published in Physics Letters B