Abstract
An investigation of the consequences on unphysical sheets of a Mandelstam-type representation holding for a twoparticle scattering amplitude on the physical sheet is described. The domain of analyticity in the energy and momentum transfer variables is constructed and compared with perturbation theory. A theorem on multiplication of singularities for Legendre polynomial expansions used in the discussion is proven. (auth)
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Schedule a callMore From: Physical review. A, Atomic, molecular, and optical physics
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