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The microscopic description of neutron scattering by $^{16}$O below 30 MeV iscarried out by means of the continuum particle-vibration coupling (cPVC) methodwith the Skyrme nucleon-nucleon ($NN$) effective interaction. In the cPVCmethod, a proper boundary condition on a nucleon in continuum states isimposed, which enables one to evaluate the transition matrix in astraightforward manner. Experimental data of the total and total-elastic crosssections are reproduced quite well by the cPVC method. An important feature ofthe result is the fragmentation of the single-particle resonance into manypeaks as well as the shift of its centroid energy. Thus, some part of the finestructure of the experimental cross sections at lower energies is welldescribed by the cPVC framework. The cPVC method based on a real $NN$ effectiveinteraction is found to successfully explain about 85% of the reaction crosssection, through explicit channel-coupling effects.

Self-consistent microscopic description of neutron scattering by $^{16}$O based on the continuum particle-vibration coupling method