Higgs boson decay into Z bosons and a photon

We present a brief summary of our one-loop calculation of the width Gamma( H -> ZZ gamma) in the standard model for Higgs boson masses 195GeV <= m(H) <= 250GeV. The helicity amplitudes contain a contribution from the anomalous ZZ gamma triangle graph and the most dominant helicity combinations for the Z bosons and the photon are when one of the Z bosons is longitudinally polarized and the other has the same helicity as the photon. This decay is, however, highly suppressed. The ratios of Gamma( H -> ZZ gamma) to other one- loop Higgs decays are Gamma( H -> ZZ gamma)/Gamma( H -> gamma gamma) similar to Gamma( H -> ZZ gamma)/Gamma( H -> gamma Z) less than or similar to 10(-7).