SUSY-QCD corrections to scalar quark decays into charginos and neutralinos

We calculate the supersymmetric O(αs) QCD corrections to the decays qi → q′ χj± (i, j = 1, 2) and qi → qχk0 (k = 1,…, 4) within the Minimal Supersymmetric Standard Model. In particular we consider the decays of squarks of the third generation, ti and bi (i = 1, 2), where the left-right mixing must be taken into account. The corrections turn out to be of about 10%, except for higgsino-like charginos or neutralinos, where they can go up to 40%.