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We examine supersymmetric models with mixed modulus-anomaly mediated SUSYbreaking (MM-AMSB) soft terms which get comparable contributions to SUSYbreaking from moduli-mediation and anomaly-mediation. The apparent (mirage)unification of soft SUSY breaking terms at Q=mu_mir not associated with anyphysical threshold is the hallmark of this scenario. The MM-AMSB structure ofsoft terms arises in models of string compactification with fluxes, where theaddition of an anti-brane leads to an uplifting potential and a de Sitteruniverse, as first constructed by Kachru {\it et al.}. The phenomenology mainlydepends on the relative strength of moduli- and anomaly-mediated SUSY breakingcontributions, and on the Higgs and matter field modular weights, which aredetermined by the location of these fields in the extra dimensions. Wedelineate the allowed parameter space for a low and high value of tan(beta),for a wide range of modular weight choices. We calculate the neutralino relicdensity and display the WMAP-allowed regions. We show the reach of the CERN LHCand of the International Linear Collider. We discuss aspects of MM-AMSB modelsfor Tevatron, LHC and ILC searches, muon g-2 and b->s \gamma branchingfraction. We also calculate direct and indirect dark matter detection rates,and show that almost all WMAP-allowed models should be accessible to aton-scale noble gas detector. Finally, we comment on the potential of collidersto measure the mirage unification scale and modular weights in the difficultcase where mu_mir>>M_GUT.

Collider and dark matter phenomenology of models with mirage unification