Weak Boson Production Amplitude Zeros; Equalities of the Helicity Amplitudes

Abstract

We investigate the radiation amplitude zeros exhibited by many Standard Model amplitudes for triple weak gauge boson production processes. We show that $WZ\gamma$ production amplitudes have especially rich structure in terms of zeros, these amplitudes have zeros originating from several different sources. It is also shown that TYPE I current null zone is the special case of the equality of the specific helicity amplitudes.

Comments: 27 pages, 12 figures, 2 tables