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

Abstract : 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.
Keywords :
Document type :
Conference papers

Cited literature [1 references]

http://hal.in2p3.fr/in2p3-00005088
Contributor : LPSC bibliotheque Connect in order to contact the contributor
Submitted on : Thursday, March 11, 1999 - 2:30:55 PM
Last modification on : Friday, September 10, 2021 - 1:50:04 PM
Long-term archiving on: : Friday, May 29, 2015 - 4:51:07 PM

### Identifiers

• HAL Id : in2p3-00005088, version 1

### Citation

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⟩

Record views