In-medium $\pi-\pi$ correlations in the $\rho$-meson-channel - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Conference Papers Ricerca Scientifica ed Educazione Permanente Supplemento Year : 1998

In-medium $\pi-\pi$ correlations in the $\rho$-meson-channel

F. Bonutti
  • Function : Author
E. Fragiacomo
  • Function : Author
N. Grion
  • Function : Author
J. Wambach
  • Function : Author


The present status of the in-medium invariant $\pi-\pi$ mass distribution in the sigma-meson channel around the threshold is reviewed from the theory side and contrasted with recent experiments on $(\pi,2\pi)$ knock-out reactions. A preliminary investigation indicates that the strongly target-mass dependent invariant mass enhancement of the two pions can be explained theoretically. A more refined reaction theory is needed to confirm this result. In the theoretical description, based on the linear sigma model, emphasis is put on constraints from chiral symmetry.
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in2p3-00005088 , version 1 (11-03-1999)


  • HAL Id : in2p3-00005088 , version 1


P. Schuck, F. Bonutti, G. Chanfray, E. Fragiacomo, N. Grion, et al.. In-medium $\pi-\pi$ correlations in the $\rho$-meson-channel. 36th International Winter Meeting on Nuclear Physics, Jan 1998, Bormio, Italy. pp.170-181. ⟨in2p3-00005088⟩
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