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In medium sigma meson effects in two pion photoproduction in nuclei
L. Roca, E. Oset, M. J. Vicente Vacas
We show theoretical results for production on nucleons and nuclei in the kinematical region where the scalar isoscalar amplitude is influenced by the pole.…
Unitarized chiral perturbation theory of hadrons
E. Oset
An exposition is made of recent developments using techniques of unitary chiral perturbation theory, , which allows one to extend predictions using chiral Lagrangians to hi…
eta nucleus optical potential in a chiral unitary approach
T. Inoue, E. Oset
The self-energy of an eta in a nuclear medium is calculated in a chiral unitary model, and applied to eta states in nuclei. Our calculation predicts an attractive eta nucleus optic…
The two pion decay of the Roper resonance
E. Hernández, E. Oset, M. J. Vicente Vacas
We evaluate the two pion decay of the Roper resonance in a model where explicit re-scattering of the two final pions is accounted for by the use of unitarized chiral perturbation t…
decay within unitarized chiral perturbation theory
E. Oset, J. R. Pelaez, L. Roca
We improve the calculations of the decay within the context of meson chiral lagrangians. We use a chiral unitary approach for the meson-meson interaction, thus genera…
Chiral unitary approach to hadron spectroscopy
E. Oset, T. Inoue, M. J. Vicente Vacas +2
The s-wave meson-baryon interaction in the , and sectors is studied by means of coupled channels, using the lowest-order chiral Lagrangian and the N/D method…