Large corrections to the quark mass matrices at the supersymmetric threshold allow the theory to have identical Yukawa matrices in the superpotential. We demonstrate that Up-Down unification can take place in a moderate quark-squark alignment scenario with an average squark mass of the order 1 TeV and with tanβ>15
@article{arxiv.hep-ph/9803354,
title = {Up-Down Unification just above the supersymmetric threshold},
author = {C. Hamzaoui and M. Pospelov},
journal= {arXiv preprint arXiv:hep-ph/9803354},
year = {2011}
}