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We sum up two- and three-point amplitudes in the chiral higher-spin theoryover helicities and find that these quite manifestly have the form of invarianttraces of the flat space chiral higher-spin algebra. We consider invarianttraces of products of higher numbers of on-shell higher-spin fields andinterpret these as higher-point scattering amplitudes. This constructionclosely mimics its anti-de Sitter space counterpart, which was considered sometime ago and was confirmed holographically.

Invariant traces of the flat space chiral higher-spin algebra as scattering amplitudes