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It is demonstrated that both elastic and inelastic $NN$ scattering atlaboratory energies up to 600--800 MeV, at least in some partial wavescharacterized by a large inelasticity, can be described by a superposition ofthe conventional long-range one-pion exchange and a specific short-rangeinteraction induced by the $s$-channel dibaryon exchange. For the $^3P_2$,$^1D_2$ and $^3F_3$ partial waves, the pole parameters giving the best fit ofthe real and imaginary parts of the $NN$ phase shifts are consistent with theparameters of the respective isovector dibaryon resonances foundexperimentally. In the $^1S_0$ channel, the suggested interaction gives twopoles of the $S$-matrix -- the well-known singlet deuteron and an exciteddibaryon. On the basis of the results presented, a conclusion is made about thenature of $NN$ interaction and its strong channel dependence.

Single pole dominance in short- and intermediate-range $NN$ interaction