Left–left squark mixing, $K^+\rightarrow \pi^+\nu\bar{\nu}$ and minimal supersymmetry with largetanβ

Abstract

We analyze the role of the left–left squark mixing in the rare [Formula: see text] decay within the minimal supersymmetry with a large tan β. A Higgs boson mass of 125 GeV has been taken into account leading to correlation between stop masses and trilinear soft supersymmetry breaking coupling [Formula: see text]. We find that measurable effects, similar to that of the well known LR squark mixing terms, are possible for large [Formula: see text] combined with the off-diagonal LL-insertions. Precise measurements of the decay rate are expected from the ongoing NA62 experiment at CERN. We emphasize that the effect we present can put certain limits on the left–left flavor changing structure of the squark mass matrix.