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Journal Articles Physical Review C Year : 2000

Reduced $\sigma$-meson mass and in-medium S-wave $\pi-\pi$ correlations


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 with respect to standard many-body effects. The relevance of this result for the explanation of recent $A(\pi,2\pi)X$ data is pointed out.

Dates and versions

in2p3-00003757 , version 1 (06-01-2000)



Z. Aouissat, G. Chanfray, P. Schuck, J. Wambach. Reduced $\sigma$-meson mass and in-medium S-wave $\pi-\pi$ correlations. Physical Review C, 2000, 61, pp.012202(R). ⟨10.1103/PhysRevC.61.012202⟩. ⟨in2p3-00003757⟩
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