Supersymmetric electroweak corrections to the chargino decay into neutralino and W boson

We investigated the electroweak corrections from one-loop diagrams involving the third generation (s)quarks to the decay width of the process (x) over tilde (+)(1) --> W+(x) over tilde (0)(1) in the framework of the minimal supersymmetric standard model. Our calculation shows that these corrections are not very sensitive to the mass of the lightest neutralino (x) over tilde (0)(1) and the sbottom mixing angle theta(b), but depend strongly on the top squark mixing angle theta(b) and tanbeta. With our chosen parameters, we find that these radiative corrections can exceed 10%(, therefore they should be taken into account for the precise experimental measurement at future colliders.