The asymptotic behaviour of the dual Pomeron amplitude

A rigorous derivation is given of the asymptotic properties of the one-loop nonplanar amplitude. Both s- and t-channel asymptotic behaviours are investigated. They are controlled by the expected Regge singularities and possible exponentials are ruled out. The s-channel fixed-angle behaviour is again an exponential. The coefficient of s in the exponential is exactly half of that obtained for the Born approximation and the planar loop. (12 refs).