Search for Inert Doublet Model scalars at high energy CLIC

Compact Linear Collider (CLIC) at CERN will allow us to study electron-positron collisions with energies from 380 GeV up to 3 TeV. Its main goal at high energy stages is to search for ”new physics” beyond the Standard Model (SM). Despite the good agreement of all collider result with SM predictions, many observations indicate the existence of a new form of matter: dark matter. One of the simplest extensions of the SM, providing a dark matter candidate, is the Inert Doublet Model (IDM). We consider prospects for observing inert scalar pair-production at high energy CLIC. We study charged scalar production in the process e+e- --> H+H-, followed by H+/- decays into the lightest, stable neutral scalar dark matter candidate H and the real or virtual W bosons. We focus on the semi-leptonic final state, which seems to be most promissing as the discovery channel for high mass scenarios.