Singularities in the energy distribution of a single lepton in the search for dark matter particles at the international linear Collider/Compact linear Collider: Source for measuring their masses

The measuring of model-independent singularities in the energy distribution of a single lepton in the cascade process e⁺ e^- → D⁺ D^- → DDW⁺ W^- → DD(q q̇)μν will allow one to reliably determine the mass of a candidate for dark matter D and its charged partners D^± in future experiments at the International Linear Collider/Compact Linear Collider (ILC/CLIC).