Test of an Equivalence Theorem at One-Loop
Abstract
Description
We 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/712
8 pages + 4 figures available on request, MAD/PH/712