On flavor mixing in broken supergravity

Abstract

The scale dependence of quark and squark mass and flavor mixing is studied with the renormalization group equations of broken N = 1 supergravity. The rotation matrix between charge − 1 3 quarks and squarks turns out to be nearly equal to the Cabibbo-Kobayashi-Maskawa one. Gluino couplings then change flavor, but we find that their contribution to the K 0− K 0 mixing is generally smaller than the usual standard model result.