Experimental Constraints on Scharm-Stop Flavor Mixing and Implications in Top-quark FCNC Processes
Abstract
We examine experimental constraints on scharm-stop flavor mixing in the minimal supersymmetric standard model, which arise from the experimental bounds on squark and Higgs boson masses, the precision measurements of W-boson mass and the effective weak mixing angle, as well as the experimental data on Bs- Bs mixing and b -> s gamma. We find that the combined analysis can put rather stringent constraints on cL-tL and cL-tR mixings. As an illustration for the effects of such constraints, we examine various top-quark flavor-changing neutral-current processes induced by scharm-stop mixings at the LHC and find that their maximal rates are significantly lowered.
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