Light stop from b-τ Yukawa unification

We show that b-tau Yukawa unification can be successfully implemented in the constrained minimal supersymmetric model and it yields the stop co-annihilation scenario. The lightest supersymmetric particle is a bino-like dark matter neutralino, which is accompanied by a 10-20% heavier stop of mass similar to 100-330 GeV. We highlight some benchmark points which show a gluino with mass similar to 0.6-1.7 TeV, while the first two family squarks and all sleptons have masses in the multi-TeV range. (C) 2011 Elsevier B.V. All rights reserved.