  We use the spinor helicity formalism in order to derive the dyadic forms for
massless fields of various spins. We also give an iterated form of this
approach in case higher spin theories are under study. This reduces
calculations at hard and soft scattering problems in gauge theories
drastically. Finally, we state and prove a theorem of gauge symmetry violation
in the presence of minimal coupling with light in higher spin theories
($j>1/2$).
