Small Visible Energy Scalar Top Iterative Discriminant Analysis for   Different Center-of-Mass Energies
  Light scalar top quarks with a small mass difference with respect to the neutralino mass are of particular cosmological interest. This study uses an Iterative Discriminant Analysis method to optimize the expected selection efficiency at a International Linear Collider (ILC). A previous study at sqrt(s)=260 GeV with 50 fb-1 has been extended to sqrt(s)=500 GeV with 500 fb-1, and results from both studies are compared. 
A. Sopczak, A. Finch, A. Freitas, C. Milstene, M. Schmitt