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Motivated by D-brane model building, we evaluate the $\cal{F}$-$SU(5)$ modelwith additional vector-like particle multiplets, referred to as flippons,within the framework of No-Scale Supergravity with non-vanishing generalsupersymmetry breaking soft terms at the string scale. The viable phenomenologyis uncovered by applying all current experimental constraints, including butnot limited to the correct light Higgs boson mass, WMAP and Planck relicdensity measurements, and several LHC constraints on supersymmetric particlespectra. Four interesting regions of the parameter space arise, as well asmixed scenarios, given by: (i) light stop coannihilation; (ii) pure Higgsinodark matter; (iii) Higgs funnel; and (iv) light stau coannihilation. Allregions can generate the observed value of the relic density commensurate witha 125 GeV light Higgs boson mass, with the exception of the relatively smallrelic density value for the pure Higgsino lightest supersymmetric particle(LSP). This work is concluded by gauging the model against present LHC searchconstraints and derivation of the final states observable at the LHC for eachof these scenarios.

Inspiration from Intersecting D-branes: General Supersymmetry Breaking Soft Terms in No-Scale ${\cal F}$-$SU(5)$