Next-to-leading order QCD predictions for associated production of top squarks and charginos

We present the calculation of the next-to-leading order (NLO) inclusive total cross sections for the associated production processes $pp\to \tilde{t}_i\tilde{\chi}_k^-$ in the Minimal Supersymmetric Standard Model at the CERN Large Hadron Collider. Our results provide the theoretical predictions for the total and differential cross sections for the above processes. The NLO QCD corrections generally enhance the leading order total cross sections by a few ten percent, and reduce significantly the dependence of the total cross section on the renormalization/factorization scale $\mu_f$, which leads to increased confidence in predictions based on these results