QCD Corrections to Flavor-Changing Neutral Currents in the Supersymmetric Standard Model

Details QCD Corrections to Flavor-Changing Neutral Currents in the Supersymmetric Standard Model QCD Corrections to Flavor-Changing Neutral Currents in the Supersymmetric Standard Model

1997-07-02

arxiv.org/abs/hep-ph/9707225v3

Phys.Lett.B412:77-85,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, Latex. Version to be published in Phys. Lett. B

Scientific paper

10.1016/S0370-2693(97)00920-9

We compute the leading QCD corrections to K-Kbar mixing in the supersymmetric standard model with general soft supersymmetry-breaking parameters. We construct the \Delta S=2 effective Lagrangian for three hierarchies of supersymmetric particle masses, namely, when the gluino mass is comparable to, much greater than, or much less than the masses of the first two generation squarks. We find that the QCD corrections tighten the limits on squark mass splittings by more than a factor of two.

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