Speaker
Daiki Ueda
(Sokendai)
Description
In light of a discrepancy of the direct CP violation in K\to\pi\pi decays, \epsilon'/\epsilon_K, we investigate gluino contributions to the electroweak penguin, where flavor violations are induced by squark trilinear couplings. Top-Yukawa contributions to \Delta S=2 observables are taken into account, and vacuum stability conditions are evaluated in detail. It is found that this scenario can explain the discrepancy of \epsilon'/\epsilon_K for the squark mass smaller than 5.6 TeV. We also show that the gluing contributions can amplify Br(K\to \pi\nu\bar{\nu}), Br(K_S\to \mu^+ \mu^-)_{Jeff} and \Delta A_{CP}(b\tps\gamma). Such large effects could be measured in future experiments.
