  Three-point correlators of spinning operators admit multiple tensor
structures compatible with conformal symmetry. For conserved currents in three
dimensions, we point out that helicity commutes with conformal transformations
and we use this to construct three-point structures which diagonalize helicity.
In this helicity basis, OPE data is found to be diagonal for mean-field
correlators of conserved currents and stress tensor. Furthermore, we use
Lorentzian inversion formula to obtain anomalous dimensions for conserved
currents at bulk tree-level order in holographic theories, which we compare
with corresponding flat-space gluon scattering amplitudes.
