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As an illustration of general principles, the $W$-boson loop contribution tothe amplitude for the decay $H\to \gamma \gamma$ is calculated within aspecific model for the effective lagrangian describing the anomalous gaugeboson couplings. Different approaches to the dependence of the result on thescale of new physics $\Lambda$ are briefly discussed.Comment: 17 pages, 2 figures, accepted for publication in Czechoslovak Journal  of Physic

Anomalous couplings of vector bosons and the decay $H \longrightarrow γγ$: Dimensional regularization versus momentum cutoff