3 papers
nucl-th1999
Dropping Sigma-Meson Mass and In-Medium S-Wave pion-pion Correlations
Z. Aouissat, G. Chanfray, P. Schuck +1
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 inva…
nucl-th1998
Enhancement of Threshold Cross Sections by In-Medium Final State Interactions
R. Rapp, J. W. Durso, Z. Aouissat +5
We address the problem of pion production in low energy -nucleus collisions. For the production mechanism we assume a simple model consisting of a coherent sum of single pion ex…
nucl-th1996
A Non-Perturbative Treatment of the Pion in the Linear Sigma-Model
Z. Aouissat, G. Chanfray, P. Schuck +1
Using a non-perturbative method based on the selfconsistent Quasi-particle Random-Phase Approximation (QRPA) we describe the properties of the pion in the linear -model. It is f…