Searching for dark matter via mono-$Z$ boson production at the ILC

Understand

High energy colliders provide a new unique way to determine the microscopic properties of the dark matter (DM).

• Weakly interacting massive particles (WIMPs) are widely considered as one of the best DM candidates.
• It is usually assumed that the WIMP couples to the SM sector through its interactions with quarks and leptons.
• In this paper, we investigate the DM pair production associated with a $Z$ boson in an effective field theory framework at the International Linear Collider (ILC), which can be used to study the interactions between the DM and leptons.