Evaluation of the pi pi-scattering amplitude in the sigma-channel at finite density
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Evaluation of the pi pi-scattering amplitude in the sigma-channel at finite density

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Evaluation of the pi pi-scattering amplitude in the sigma-channel at finite density

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Cabrera Urbán, Daniel; Oset Báguena, Eulogio Perfil; Vicente Vacas, Manuel José Perfil
Aquest document és un/a article, creat/da en: 2005
The pi pi scattering amplitude in the sigma-channel is studied at finite baryonic density in the framework of a chiral unitary approach which successfully reproduces the meson meson phase shifts and generates the f(0) and sigma resonances in vacuum. We address here a new variety of mechanisms recently suggested to modify the pi pi interaction in the medium, as well as the role of the s-wave selfenergy, in addition to the p-wave, in the dressing of the pion propagators.

    Cabrera, D. Oset Báguena, Eulogio Vicente Vacas, Manuel José 2005 Evaluation of the pi pi-scattering amplitude in the sigma-channel at finite density Physical Review C 72 2 025207-1 025207-10
http://dx.doi.org/10.1103/PhysRevC.72.025207
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