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Within the Constrained Minimal Supersymmetric Standard Model (CMSSM) withMinimal Flavor Violation (MFV) for scalar quarks we study the effects ofintergenerational squark mixing on $B$-physics observables, electroweakprecision observables (EWPO) and the Higgs boson mass predictions. Squarkmixing is generated through the Renormalization Group Equations (RGE) runningfrom the GUT scale to the electroweak scale due to presence of non diagonalYukawa matrices in the RGE's, e.g. due to the CKM matrix. We find that the$B$-Physics observables as well as the Higgs mass predictions do not receivesizable corrections. On the other hand, the EWPO such as the $W$ boson mass canreceive corrections by far exceeding the current experimental precision. Thesecontributions can place new upper bounds on the CMSSM parameter space. Weextend our analysis to the CMSSM extended with a mechanism to explain neutrinomasses (CMSSM-seesaw I), which induces flavor violation in the scalar leptonsector. Effects from slepton mixing on the analyzed observables are in generalsmaller than from squark mixing, but can reach the level of the currentexperimenal uncertainty for the EWPO.

Effects of Sfermion Mixing induced by RGE Running in the Minimal Flavor Violating CMSSM