Dark matter relic density from observations of supersymmetry at the ILC

Abstract

If supersymmetric particles were discovered at the ILC, would we be able to prove that the dark matter candidate discovered is the only dark matter particle? This was investigated using a scenario with a mostly bino lightest supersymmetric particle and a coannihilating stau. We will demonstrate which measurements and precisions are needed to determine whether the observed dark matter candidate is the sole constituent of the dark matter relic density. The required precisions will be compared to the predicted ILC precisions