Masses of Superpartners of Quarks, Leptons, and Gauge Mesons in Supergravity Grand Unified Theories

A class of "realistic" supergravity grand-unified-theory models possessing two W-inos and two Z-inos which lie above and below W^± and Z⁰ mass, respectively, are examined. A lower bound on the W-ino mass of {} 30 GeV is obtained with an upper bound of {} 250 GeV on the Higgs mass. It is shown that the Z⁰ decays prominantly into two W-inos if the mass of the W-ino<~MW2. The superpartners of quarks and leptons are shown to be approximately degenerate and in some models have mass {} 100 GeV.