Scalar Isoscalar pion pairs in nuclei and the A(pi,pipi)X reaction

Abstract

The reaction A(pi,pi pi)X has been studied at low energies, paying particular attention to the interaction of the two final pions in the scalar isoscalar (I=J=0) channel. We have developed a microscopic model for the pion production, and then implemented the two pion final state interaction by using the results of a non-perturbative unitary coupled-channels method based in the standard chiral Lagrangians. The resulting model, describes well the reaction on the nucleon for all different isospin channels. Finally, we have considered the reaction in nuclei. Our calculation takes into account Fermi motion, Pauli blocking, pion absorption, and also the strong modification of the pi-pi interaction in the nuclear medium.

21 pages, 9 figures

Cited by in corpus (21)

• Hadrons in strongly interacting matter
• In-medium chiral perturbation theory beyond the mean-field approximation
• The Chiral Restoration Transition of QCD and Low Mass Dileptons
• In-medium modifications of the $\pi \pi$ interaction in photon-induced reactions
• Chiral approach to the rho meson in nuclear matter
• The $\sigma$ meson in a nuclear medium through two pion photoproduction
• The $\pi \pi$ interaction in nuclear matter from a study of the ${\pi }^{+}A\to {\pi }^{+}{\pi }^{\pm }{A}^{\prime }$ reactions
• In-medium pi-pi Correlation Induced by Partial Restoration of Chiral Symmetry
• Charm and hidden charm scalar mesons in the nuclear medium
• Medium Modification of The Pion-Pion Interaction at Finite Density
• The pi -> pi pi process in nuclei and the restoration of chiral symmetry
• General properties of the pion production reaction in nuclear matter
• Two-pion production processes, chiral symmetry and NN interaction in the medium
• Renormalization of the f0(980) and a0(980) scalar resonances in a nuclear medium
• $\pi \to \pi \pi$ results in nuclei
• Production of isoscalar pion pairs in the pd -> 3He pi pi reaction near threshold
• Final State Interactions in Pion Production from Nuclei
• The $({\pi }^{-},\gamma \gamma )$ reaction in nuclei and the $\sigma$ meson in the medium
• Kaon-antikaon nuclear optical potentials and the kappa meson in the nuclear medium
• Study of the pd(dp) -> 3He pi pi reactions close to threshold
• Two-pion production in deuteron-deuteron collisions at low energies