Probing Nucleon Correlations Using Direct Reactions : Part I: Correlation Effects on a Single-Nucleon

概要

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Nucleon correlations cause the spectroscopic strength of single-particle levels to be reduced relative to the independent-particle-model values. The spectroscopic strengths can be studied from the measured cross sections by comparison with the reaction theory. The reduction of the experimentally deduced spectroscopic strengths, relative to the predictions of shell-model calculations, quantifies the insufficiency of correlation treatments in the structure theory. Different conclusions on the isospin dependence of nucleon correlations are reported from the light-nucleus induced knockout and transfer reaction measurements respectively. Further experimental efforts are essential to verify the reaction models for reliable extraction of structure information. (This report discusses only the first part of the talk for the correlation effects on a single-nucleon. The second part related to the two-nucleon correlations is not covered.)
2012-02-20