Isospin breaking corrections to low-energy pi-K scattering
High Energy Physics - Phenomenology
2009-11-07 v1 High Energy Physics - Experiment
Abstract
We evaluate the matrix elements for the processes pi^0 K^0 -> pi^0 K^0 and pi^- K^+ -> pi^0 K^0 in the presence of isospin breaking terms at leading and next-to-leading order. As a direct application the releveant combination of the S-wave scattering lengths involved in the pion-kaon atom lifetime is determined. We discuss the sensitivity of the results with respect to the input parameters.
Keywords
Cite
@article{arxiv.hep-ph/0107299,
title = {Isospin breaking corrections to low-energy pi-K scattering},
author = {A. Nehme and P. Talavera},
journal= {arXiv preprint arXiv:hep-ph/0107299},
year = {2009}
}
Comments
33 pages, plain latex, 2 figures