Dropping Sigma-Meson Mass and In-Medium Pion-Pion Correlations

Details Dropping Sigma-Meson Mass and In-Medium Pion-Pion Correlations Dropping Sigma-Meson Mass and In-Medium Pion-Pion Correlations

2000-02-11

arxiv.org/abs/nucl-th/0002031v1

Physics

Nuclear Physics

Nuclear Theory

7 pages, 2 Postscript figures, contribution to the `International Workshop XXVIII on Gross Properties of Nuclei and Nuclear Ex

Scientific paper

The influence of a dropping sigma-meson mass on previously calculated in-medium pion-pion correlations in the J=I=0 (sigma-meson) channel is investigated. It is found that the invariant-mass distribution around the vacuum threshold experiences a further strong enhancement over and above the standard many-body effects. The relevance of this result for the theoretical interpretation of this result for the theoretical interpretation of recent A(pi-2 pi)X data is pointed out.

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