Associated production of Higgs at linear collider in the inert Higgs Doublet Model

摘要

We study the correlation between the Standard Model Higgs decay (h ightarrow gamma gamma ) and (h ightarrow Z gamma ) in the Inert Higgs Doublet Model. It is found that these two one-loop-induced decays are positively correlated, with the latter channel having slightly smaller branching ratio than the former one. At the Linear Collider, we study the interplay of the off-shell extension of these two amplitudes that contributed significantly to the associated production of the Higgs boson with a photon in the process (e^+ e^- ightarrow gamma h) and with an electron in the process (e^-gamma ightarrow e^- h) in the (s) and (t) channels, respectively, via both (gamma ) and (Z) exchange for each process.