QUADRUPLE YUKAWA UNIFICATION IN THE MINIMAL SUPERSYMMETRIC STANDARD MODEL

Predictions for m(t), tan beta, m(nu tau) are calculated for quadruple third family t-b-tau-nu(tau), Yukawa unified models in the MSSM. The renormalisation group equations for the 3 families of the MSSM, including the right-handed neutrino, are presented. For right-handed tau neutrino Majorana masses that are bigger than 10(11) GeV, the tau neutrino mass is consistent with present cosmological bounds. The m(t), tan beta predictions are approximately equivalent to those in triple third family Yukawa unified models.