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arxiv: nucl-th/0002031 · v1 · submitted 2000-02-11 · ⚛️ nucl-th

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

P. SchucK (Institut des Sciences Nucleaires , Grenoble , France) , Z. Aouissat (IKP , Technische Universitat , Darmstadt , Germany) , G. Chanfray (Institut de Physique Nucleaire
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Lyon J. Wambach (IKP
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classification ⚛️ nucl-th
keywords sigma-mesoncorrelationsdroppingin-mediuminterpretationmasspion-pionresult
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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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