Mirror matter admixtures in K_L \to \gamma\gamma
High Energy Physics - Phenomenology
2009-11-10 v1
Abstract
Based on possible albeit tiny, admixtures of mirror matter in ordinary mesons we study the K_L \to \gamma\gamma transition. We find that this process can be described with a small SU(3) symmetry breaking of only 3%. We also determine the eta-eta' mixing angle and the pseudoscalar decay constants. The results for these parameters are consistent with some obtained in the literature. They favor two recent determinations; one based on two analytical constraints, and another one based on next-to-leading order power corrections.
Keywords
Cite
@article{arxiv.hep-ph/0402199,
title = {Mirror matter admixtures in K_L \to \gamma\gamma},
author = {G. Sanchez-Colon and A. Garcia},
journal= {arXiv preprint arXiv:hep-ph/0402199},
year = {2009}
}