Nucleon Correlation Effects on Y-Scaling Quantities in Nuclei

The asymptotic scaling function F(y) and the binding correction B(y) as well as the mean kinetic and removal energies are calculated in the cases of the 4He, 12Ca, 16O and 40Ca nuclei using the nucleon momentum distributions obtained within the Jastrow correlation method and the phenomenological model accounted for short-range and tensor nucleon-nucleon correlations. The scaling functions F(y) differ from those obtained in the mean-field approximation and are in qualitative agreement with the available experimental data. It is shown that the binding correction B(y) can be explicitly evaluated using a realistic nuclear spectral function. The account for the nucleon-nucleon correlations gives increased values of the mean kinetic (T) and mean removal (E) energy (in comparison with their values in the mean-field approximation) and leads to correct values of the binding energy per nucleon in the nuclei considered. (author). 32 refs.; 6 figs.; 1 tab