The evolution of the Cabibbo-Kobayashi-Maskawa matrix and the quark Yukawa couplings is performed for the one-loop renormalization group equations in the universal extra dimension model. It is found that the evolution of mixing angles and the CP violation measure J may rapidly vary in the presence of the Kaluza-Klein modes, and this variation becomes dramatic as the energy approaches the unification scale.
@article{arxiv.1010.5522,
title = {Evolution of the CKM Matrix in the Universal Extra Dimension Model},
author = {A. S. Cornell and Lu-Xin Liu},
journal= {arXiv preprint arXiv:1010.5522},
year = {2015}
}