Up-down unification just above the supersymmetric threshold
1 Département de Physique, Université du Québec à
Montréal, C.P. 8888, Succ. Centre-Ville, Montréal,
H3C 3P8 Canada
2 Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
Received: 22 April 1998 / Revised version: 17 September 1998 / Published online: 25 January 1999
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 1TeV and with .