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 $h\to \gamma\gamma$ and $h\to Z \gamma$ in the Inert Higgs Doublet Model. It is found thatthese two one-loop-induced decays are positively correlated, with the laterchannel having slightly smaller branching ratio than the former one. At theLinear Collider, we study the interplay of the off-shell extension of these twoamplitudes that contributed significantly to the associated production of theHiggs boson with a photon in the process $e^+ e^- \to \gamma h$ and with anelectron in the process $e^-\gamma \to e^- h$ in the $s$ and $t$ channelsrespectively via both $\gamma$ and $Z$ exchange for each process.