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Dropping $\sigma$-meson mass and in-medium s-wave $\pi\pi$ correlations

Abstract : 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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http://hal.in2p3.fr/in2p3-00023019
Contributor : Lpsc Bibliotheque <>
Submitted on : Wednesday, April 12, 2000 - 1:29:06 PM
Last modification on : Thursday, November 19, 2020 - 12:58:39 PM

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P. Schuck, Z. Aouissat, G. Chanfray, J. Wambach. Dropping $\sigma$-meson mass and in-medium s-wave $\pi\pi$ correlations. 28th International Workshop on Gross Properties of Nuclei and Nuclear Excitations, Jan 2000, Hirschegg, Austria. pp.73-79. ⟨in2p3-00023019⟩

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