Abstract
A diagonal form for the continuation of a multiparticle unitarity integral to complex angular momentum is given involving the “Froissart-Gribov” continuations of multiparticle amplitudes to complex helicity and angular momentum defined in a previous paper. The form for the continuation of the three-particle unitarity integral is considered in detail and shown to converge and satisfy the Carlson condition on the asymptotic behaviour under quite general conditions.
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