Renormalization of the f0(980) and a0(980) scalar resonances in a nuclear medium

Abstract

The meson meson interaction in the scalar sector in the presence of a nuclear medium is studied with particular attention to the change of the properties of the f0(980) and a0(980) resonances. By using a chiral unitary approach which generates the f0 and a0 resonances and reproduces their free properties, we find that the position of the resonances in the medium is barely changed but their widths are considerably broadened. New many body corrections generating from higher orders in the chiral Lagrangian plus the contribution from N*h excitations, not considered before in connection with the pion-pion interaction in the nuclear medium, are also investigated.

24 pages, 15 figures

References in corpus (5)

• The properties of \bar{K} in the nuclear medium
• $\sigma$ Exchange in the NN Interaction within the Chiral Unitary Approach
• A coupled K-matrix description of the reactions pi+N -> pi+N, pi+N -> eta+N, gamma+N -> pi+N and gamma+N -> eta+N
• Scalar Isoscalar pion pairs in nuclei and the A(pi,pipi)X reaction
• Photoproduction of scalar mesons on protons and nuclei

Cited by in corpus (9)

• Chiral approach to the rho meson in nuclear matter
• $\Lambda (1405)$ production in the ${\pi }^{-}p\to K^0\pi \Sigma$ reaction
• The $\sigma$ meson in a nuclear medium through two pion photoproduction
• In-medium pi-pi Correlation Induced by Partial Restoration of Chiral Symmetry
• Charm and hidden charm scalar mesons in the nuclear medium
• General properties of the pion production reaction in nuclear matter
• Evaluation of the $\pi \pi$ scattering amplitude in the $\sigma$-channel at finite density
• Formation of sigma Mesic Nuclei in (d,t) and (d,^3He) Reactions
• The structure of the f_0(980) from system size dependent hadronic resonance ratios in p+p, p+Pb, and Pb+Pb collisions at the LHC