I consider models with non-universal gaugino masses at the gauge coupling unification scale, taking into account the Higgs boson discovery. Viable regions of parameter space are mapped and studied in the case of non-universality following from an F -term in a linear combination of singlet and adjoint representations of SU (5). I consider, in particular, "semi-natural" models that have small µ, with gaugino masses dominating the supersymmetry breaking terms at high energies. Higgsinolike particles are then much lighter than all other superpartners, and the prospects for discovery at the Large Hadron Collider can be extremely challenging. Contents I. Introduction 1 II. Models with small stop mixing (A 0 = 0) 5 III. Models with moderate stop mixing (A 0 = −m 0 ) 9 IV. Models with larger stop mixing (A 0 = −2m 0 ) 11V. Superpartner mass spectra and discovery prospects 14
VI. Outlook 18References 18