Duality condition for s- and t-channel exchange in nucleon-nucleon scattering

Abstract

We specify conditions under which the nucleon-nucleon interaction, based on the t-channel meson-exchange mechanism, is equivalent to an interaction generated via an s-channel exchange of six-quark bags. The duality is possible provided the alternation of zeros and poles of the non-dispersive part of D function takes place in the normalization where the imaginary part of D is non-negative and the CDD poles are the only poles of D.

13 pages, 1 figure, 1 table. To appear in Rom. Journ. Phys., Vol. 57, Special issue dedicated to the 80th birthday of Aureliu Sandulescu