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10 papers · 2 filters
Photoproduction of meson and baryon resonances in a chiral unitary approach
E. Oset, E. Marco, J. C. Nacher +4
By means of a coupled channel non-perturbative unitary approach, it is possible to extend the strong constrains of Chiral Perturbation Theory to higher energies. In particular, it…
Describing the nucleon and its form factors at high q**2
B. Desplanques, B. Silvestre-Brac, F. Cano +2
The nucleon form factors are calculated using a non-relativistic description in terms of constituent quarks. The emphasis is put on the reliability of present numerical methods use…
Relativistic transport equations with generalized mass shell constraints
L. Mornas, K. Morawetz
We reexamine the derivation of relativistic transport equations for fermions when conserving the most general spinor structure of the interaction and Green function. Such an extens…
Charged current weak production of the Delta resonance
L. Alvarez-Ruso, E. Oset, S. K. Singh +1
The charge changing weak production of Delta in nucleons and nuclei is studied. The reactions e^{-} p -> Delta^{0} ν_{e} and e^{+} p -> Delta^{++} \barν_{e} are considered as a pos…
Scalar Isoscalar pion pairs in nuclei and the A(pi,pipi)X reaction
M. J. Vicente Vacas, E. Oset
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 d…
The properties of \bar{K} in the nuclear medium
A. Ramos, E. Oset
The self-energy of the K^- meson in nuclear matter is calculated in a self-consistent microscopic approach, using a \bar{K}N interaction obtained from the lowest-order meson-baryon…