Pair-production and Three-body Decay of the Lighter Stop at the ILC in One-loop Order in the MSSM

Abstract

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 (${\tilde{t}}_1$) 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 ${\tilde{t}}_1$. In these scenarios, both QCD and EW corrections have positive sign for decay widths and cross sections.

Comments: 6 pages, 5 figures (7 eps files), Prepared for the Proceedings of International Workshop on Future Linear Colliders, LCWS11, 26-30 September 2011, Palacio de Exposiciones y Congresos, Granada, Spain