Abstract
We examine the effect of reggeon loop corrections to the five-point function in the double-Regge limit. Using the Gribov reggeon calculus we first discuss the reggeon triangle insertion in the double-Regge pole vertex. This is seen to give rise to an inverse square root branch point in the plane of the azimuthal angle. Making specific smoothness assumptions we obtain constraints that require the vanishing of certain triple-Regge vertices. We discuss possible implications for the Brower-Weis decoupling theorem.
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