Dropping Sigma-Meson Mass and In-Medium S-Wave pion-pion Correlations

Z. Aouissat; G. Chanfray; P. Schuck; J. Wambach

doi:10.1103/PhysRevC.61.012202

Dropping Sigma-Meson Mass and In-Medium S-Wave pion-pion Correlations

Nuclear Theory 2009-10-31 v2

Authors: Z. Aouissat , G. Chanfray , P. Schuck , J. Wambach

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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 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.

Keywords

sigma-meson mass in-medium pion-pion correlations s-wave many-body effects invariant-mass distribution

Cite

@article{arxiv.nucl-th/9908076,
  title  = {Dropping Sigma-Meson Mass and In-Medium S-Wave pion-pion Correlations},
  author = {Z. Aouissat and G. Chanfray and P. Schuck and J. Wambach},
  journal= {arXiv preprint arXiv:nucl-th/9908076},
  year   = {2009}
}

Comments

Short note submitted to PRC, 3 pages, 2 Postscript figures, using revtex. (correction to author's address)

Dropping Sigma-Meson Mass and In-Medium S-Wave pion-pion Correlations

Abstract

Keywords

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