Abstract
In this study we examine theoretically the possibility that the elastic scattering amplitude may be substantially enhanced due to the opening of a strong inelastic channel as the elastic and inelastic channels are coupled through the unitarity condition. Some recent experimental data on proton-proton scattering have suggested rather convincingly such a phenomenon. The theoretical investigation of this feature is carried out by means of the current method of dispersion relations. The dynamical inputs of the scattering amplitudes are derived from the perturbation diagrams of the Feynman theory using only the one-pion-exchange diagrams. A multichannel unitarity condition is used by retaining the three-particle intermediate states. This provides a coupling between the elastic and the production amplitudes. Finally, the problem is solved in terms of the $\frac{N}{D}$ method. The results obtained demonstrate a maximum in the elastic scattering amplitude, which seems to explain the observed phenomenon.
Published Version
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