A dual analysis of the NNπππ system

Abstract

We describe the application of certain four and five-point Dual Scattering Amplitudes to the NNπππ system and compare the results with others in the literature. In Chapter One we review the basic ideas that led to the construction of the Veneziano model and provide a short introduction to the Maximum Likelihood Method. In Chapter Two a discussion of five-point dual functions is given, followed by an application to a production process of the above system with an appropriate amplitude. In Chapter Three a fit by dual four-point functions to some suitable NN-decay at rest data is presented, together with discussion of related work, and in Chapter Four we use various five-point dual functions to fit the same data and contrast the two sets of results. This is followed by a summary of B(_5)-phenomefiology. In Chapter Five we apply various four-point function amplitudes to some NN-decay in flight data and comment on their suitability. References are provided after each Chapter, and there is some duplication of both references and material between chapters.