Develops spinor-helicity formalism generalizing partial wave unitarity bounds for multi-particle scattering and spin-2 or higher-spin theories.
In partic- ular, the structure constants of the SU (N) group, which has dimension d(SU (N)) = N 2 − 1, are normalized such that C2(SU (N)) = N
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Amplitudes and partial wave unitarity bounds
Develops spinor-helicity formalism generalizing partial wave unitarity bounds for multi-particle scattering and spin-2 or higher-spin theories.