Abstract
The effect of ground state correlations on calculated two-nucleon transfer cross sections for the reactions (p, t), (t, p), ( 3He, p) an ( 3He, n) in the lead region is investigated. The sensitivity to ground state correlations is isolated by comparing calculated DWBA cross sections obtained by using two-nucleon shell-model (2n SM) states with those obtained by using two-nucleon random-phase approximation (2n RPA) state descriptions. The correlations obtained in a 2n RPA calculation produce strong enhancements of the calculated ground state to ground state transitions involving the transfer of two identical particles over the same transitions calculated without correlations. In addition, certain other transitions are substantially affected while others are unaltered. The sensitivity of the calculated cross sections to the model and the choice of effective interaction is investigated and compared with the sensitivity of other calculated quantities.
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