Experimental and theoretical backgrounds for generation of dibaryons in NN and 3N interactions

Institute of Nuclear Physics, Moscow State University, Leninskie Gory, Moscow 119992, Russia

^a e-mail: e-mail: kukulin@nucl-th.sinp.msu.ru

Abstract

Numerous experimental and theoretical arguments in favor of the intermediate dibaryon generation in NN and 3N interactions are presented. Using some specific mechanism for the scalar field production when the 2ħω-excited multi-quark system deexcites to the ground state one formulates a concept for σ-dressed dibaryon as a carrier of intermediate-range attraction and a reason for short-range repulsion in NN-interaction. It is argued that the basic mechanisms responsible for large lowering of the Roper-resonance and the dressed dibaryon masses should be very similar. The modern experimental data of a few groups seem to confirm strongly the dibaryon picture in NN and 3N-interactions. Some important common features of the dibaryon and pomeron in highenergy NN scattering are discussed.