LAUSR

A bstractWe list all potential candidates for U(1) anomalous non-local 1-loop 4-point amplitudes and higher loop UV divergences in N$$ \mathcal{N} $$ ≥ 5 supergravities. The relevant chiral superinvariants are constructed from linearized chiral superfields and define the corresponding superamplitudes. The anomalous amplitudes, of the kind present in N$$ \mathcal{N} $$ = 4, are shown to be absent in N$$ \mathcal{N} $$ ≥ 5. In N$$ \mathcal{N} $$ = 6 supergravity the result is deduced from the double-copy (N$$ \mathcal{N} $$ = 4)Y M × (N$$ \mathcal{N} $$ = 2)Y M model, whereas in N$$ \mathcal{N} $$ = 5, 8 the result on absence of anomalous amplitudes is derived in supergravities as well as in the (N$$ \mathcal{N} $$ = 4)Y M × (N$$ \mathcal{N} $$ − 4)Y M double-copy models.