2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/44637We show that the equivalence theorem approximating one-loop gauge sector diagrams by including only Goldstone bosons in the loop gives a remarkably poor approximation to the amplitude for the decay $H\rightarrow γγ$ and for the process $γγ\rightarrow HH$. At one loop, large logarithms can arise that evade power counting arguments.8 pages + 4 figures available on request, MAD/PH/712High Energy Physics - Phenomenologytext