arXiv:nucl-th/0004057·v1·Nuclear Theory
Nucleon-Nucleon Scattering in a Three Dimensional Approach
I. Fachruddin (1) · Ch. Elster (2) · W. Glöckle (1) ((1) Institute for Theoretical Physics II, Ruhr-University Bochum; (2) IKP, FZ-Juelich and Dept. of Physics, Ohio University)
Abstract
The nucleon-nucleon (NN) t-matrix is calculated directly as function of two vector momenta for different realistic NN potentials. To facilitate this a formalism is developed for solving the two-nucleon Lippmann-Schwinger equation in momentum space without employing a partial wave decomposition. The total spin is treated in a helicity representation. Two different realistic NN interactions, one defined in momentum space and one in coordinate space, are presented in a form suited for this formulation. The angular and momentum dependence of the full amplitude is studied and displayed. A partial wave decomposition of the full amplitude it carried out to compare the presented results with the well known phase shifts provided by those interactions.
Comments: 26 pages plus 10 jpg figures