Models of minimal lepton flavor violation where the seesaw scale is higher than the relevant flavor scale predict that all lepton flavor violation is proportional to the charged lepton Yukawa matrix. If extra vector-like leptons are within the reach of the LHC, it will be possible to test the resulting predictions in ATLAS/CMS.
@article{arxiv.1001.2883,
title = {Testing minimal lepton flavor violation with extra vector-like leptons at the LHC},
author = {Eilam Gross and Daniel Grossman and Yosef Nir and Ofer Vitells},
journal= {arXiv preprint arXiv:1001.2883},
year = {2013}
}