We investigate the possibility of the identification of TeV physics models including WIMP dark matter at the International Linear Collider. Many TeV physics models contain a WIMP dark matter (chi^0) and charged new particle (chi^{ pm}) which interacts with the WIMP dark matter via the vertex chi^{ pm} chi^0 W^{ mp}. Through Monte Carlo simulations, we study the process, e^+e^- to chi^+ chi^- to chi^0 chi^0 W^+ W^-, because the signal contains the fruitful information of the model. We show that, in particular, the distribution of the chi^{ pm} production angle is the powerful probe in the TeV physics model search.
Categories: hep-ph hep-ex