One-loop QED and weak corrections to γγ → H±H∓ in the Inert Doublet Model

A bstract We present a complete one-loop analysis of charged scalar boson pair production in photon-photon collisions, γγ → H ± H ∓ , within the framework of the Inert Doublet Model (IDM). The calculation is carried out in the on-shell renormalization scheme and incorporates both weak corrections and QED effects, including soft and hard photon radiation. Virtual loop contributions and real emission processes are computed using the Feynman diagrammatic method, ensuring the cancellation of ultravi