Pair-production and Three-body Decay of the Lighter Stop at the ILC in   One-loop Order in the MSSM
  We have been developing a program package called GRACE/SUSY-loop which automatically calculates the MSSM amplitudes in one-loop order. We present numerical results of calculations for pair-production and three-body decay of the lighter stop ($\widetilde{t}_1$) at the International Linear Collider (ILC) using GRACE/SUSY-loop. Since the distributions of missing transverse energy (MET) depend on mass spectrum of SUSY particles, we consider two scenarios on three-body decay of $\widetilde{t}_1$. In these scenarios, both QCD and EW corrections have positive sign for decay widths and cross sections. 
M. Jimbo, T. Inoue, T. Jujo, T. Kon, T. Ishikawa, Y. Kurihara, K. Kato   and M. Kuroda
hep-ph