Electromagnetism in nonleptonic weak interactions
High Energy Physics - Phenomenology
2009-10-31 v2
Abstract
We construct a low-energy effective field theory that permits the complete treatment of isospin-breaking effects in nonleptonic weak interactions to next-to-leading order. To this end, we enlarge the chiral Lagrangian describing strong and Delta S=1 weak interactions by including electromagnetic terms with the photon as additional dynamical degree of freedom. The complete and minimal list of local terms at next-to-leading order is given. We perform the one-loop renormalization at the level of the generating functional and specialize to K -> pi pi decays.
Keywords
Cite
@article{arxiv.hep-ph/0006172,
title = {Electromagnetism in nonleptonic weak interactions},
author = {G. Ecker and G. Isidori and G. Mueller and H. Neufeld and A. Pich},
journal= {arXiv preprint arXiv:hep-ph/0006172},
year = {2009}
}
Comments
17 pages, 1 figure; 2 references added, final version for publication in Nucl. Phys. B