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We study the collider phenomenology of the minimal unified version of thesupersymmetry breaking scheme called Tree-level Gauge Mediation. We identify apeculiar source of gaugino mass non-universality related to the necessarySU(5)-breaking in the light fermion mass ratios and a gaugino mass sum rule atthe GUT scale, 3 M_2 + 2 M_3 = 5 M_1, which represents a smoking gun of thisscenario, together with the known tree-level sfermion mass ratio \tildem_{d^c,l} = \sqrt{2} \tilde m_{q,u^c,e^c}. The boundary conditions of the softSUSY breaking terms can be parameterised in terms of six relevant parametersonly (plus the sign of the \mu-parameter). We analyze the parameter space anddefine three benchmark points, corresponding to the three possible NLSPs, abino- or wino-like neutralino or the stau. The LSP is the gravitino as in gaugemediation. For these benchmark points we show possible signatures at the LHCfocusing on the Razor variable. We also comment on the Higgs mass.

Phenomenology of Minimal Unified Tree Level Gauge Mediation at the LHC