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Experimental Constraints on Scharm-Stop Flavor Mixing and Implications in Top-quark FCNC Processes

Junjie Cao·Gad Eilam·Ken-ichi Hikasa·Jin Min Yang
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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 B_s-\bar B_s mixing and b -> s gamma. We find that the combined analysis can put rather stringent constraints on \tilde{c}_L-\tilde{t}_L and \tilde{c}_L-\tilde{t}_R 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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Junjie Cao, Gad Eilam, Ken-ichi Hikasa, Jin Min Yang. 2006-07-16. Experimental Constraints on Scharm-Stop Flavor Mixing and Implications in Top-quark FCNC Processes. https://doi.org/10.1103/physrevd.74.031701

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