Angular Momentum Analysis of Spin 1/2 x 1/2 Scattering including Singlet-Triplet Mixing

Details Angular Momentum Analysis of Spin 1/2 x 1/2 Scattering including Singlet-Triplet Mixing Angular Momentum Analysis of Spin 1/2 x 1/2 Scattering including Singlet-Triplet Mixing

1993-03-18

arxiv.org/abs/nucl-th/9303013v1

Physics

Nuclear Physics

Nuclear Theory

16 pages

Scientific paper

The angular momentum (partial wave) reduction of the Lippmann--Schwinger equation describing the interaction of two spin 1/2 particles is extended to the case in which the spin singlet and triplet states are coupled. A straight forward method for obtaining the angular momentum decomposition of the general potential is indicated. The derived formalism is needed to describe the interaction between two nonidentical spin--1/2 particles or between two nucleons when isospin symmetry is violated. The resulting modification of the Stapp phase--shift analysis is given.

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