Oset Baguena, EulogioRamos Gómez, Àngels2011-12-072011-12-072011-10-190370-2693https://hdl.handle.net/2445/21043We study the eta'N interaction within a chiral unitary approach which includes piN , etaN and related pseudoscalar meson-baryon coupled channels. Since the SU(3) singlet does not contribute to the standard interaction and the eta' is mostly a singlet, the resulting scattering amplitude is very small and inconsistent with experimental estimations of the eta' N scattering length. The additional consideration of vector meson-baryon states into the coupled channel scheme, via normal and anomalous couplings of pseudoscalar to vector mesons, enhances substantially the eta' N amplitude. We also exploit the freedom of adding to the Lagrangian a new term, allowed by the symmetries of QCD, which couples baryons to the singlet meson of SU(3). Adjusting the unknown strength to the eta' N scattering length, we obtain predictions for the elastic eta'N -> etaN and inelastic eta' N -> etaN , piN , KLambda, KEpsilon cross sections at low eta' energies, and discuss their significance.15 p.application/pdfeng(c) Elsevier B. V., 2011Cromodinàmica quàntica Partícules (Física nuclear)Mesons (Física nuclear)Reaccions nuclearsQuantum chromodynamicsMesons (Nuclear physics)Nuclear reactionsinfo:eu-repo/semantics/article598756info:eu-repo/semantics/openAccess