6533b825fe1ef96bd12833e0
RESEARCH PRODUCT
Evaluation of the pi pi-scattering amplitude in the sigma-channel at finite density
Eulogi OsetM. J. Vicente VacasD. Cabrerasubject
PhysicsNuclear and High Energy PhysicsParticle physicsBethe–Salpeter equationNuclear TheoryMesonHigh Energy Physics::LatticeHigh Energy Physics::PhenomenologyNuclear TheorySigmaPropagatorFísicaNuclear matterBaryonScattering amplitudePionQuantum mechanicsHigh Energy Physics::ExperimentNuclear Experimentdescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2005-03-04 |