Complex Angular Momentum Analysis and Diagonalization of the Bethe-Salpeter Structure in Axiomatic Quantum Field Theory
Recent experimental measurements at HERA of the Structure Functions in lepton-hadron inelastic scattering started to bridge the gap between the hard and the soft regimes of strong interactions. In this scenario the Complex Angular Momentum (CAM) theory, which plays a relevant role in describing soft processes, which are intrinsically non-perturbative, is widely adopted as a phenomenological model. It is therefore of some interest to explore up to what extent one can give a theoretical foundation to CAM methods, starting from the basic axiomatic principles of Quantum Field Theory (QFT). In this review we shall try to expose the main results obtained recently on this topic.
KeywordsConvolution Product Volterra Kernel Absorptive Part Soft Process Integration Cycle
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