Oscillator matrix elements from nucleon-nucleon phase shifts with inclusion of short-range correlations

Methods which derive oscillator matrix elements directly from the nucleon-nucleon phase shifts usually use a zero order potential for a DWBA type approximation. Such a method is extended to include also hard-and soft-core potentials as zero order approach. The influence of the resulting correction terms is studied in Brueckner-Hartree-Fock calculations for 16O. Although realistic potentials (Hamada-Johnstone and Reid soft core) are used as reference potentials in DWBA, the effect of these corrections turns out not to be negligible, yielding about 0.7 MeV per nucleon additional binding energy in 16O. (orig.)