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

Wan Neng, Song Mao, Li Gang, Ma Wen-Gan, Zhang Ren-You, Guo Jian-You
2014 European Physical Journal C: Particles and Fields  
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
more » ... sed to study the interactions between the DM and leptons. For illustrative purposes, we present the integrated and differential cross sections for the e^+ e^- →χχ̅ Z process, where the Z boson is radiated from the initial state electron or positron. Meanwhile, we analyze the neutrino pair production in association with a Z boson as the SM background.
doi:10.1140/epjc/s10052-014-3219-2 fatcat:yv3s7mubbjdd3bgigqne7sfbfy