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dc.contributor.authorOset Baguena, Eulogiocat
dc.contributor.authorRamos Gómez, Àngelscat
dc.description.abstractWe 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.eng
dc.format.extent15 p.-
dc.publisherElsevier B. V.-
dc.relation.isformatofVersió postprint del document publicat a:
dc.relation.ispartofPhysics Letters B, 2011, Vol. 704, núm. 4, p. 334-342-
dc.rights(c) Elsevier B. V., 2011-
dc.sourceArticles publicats en revistes (Física Quàntica i Astrofísica)-
dc.subject.classificationCromodinàmica quàntica Partícules (Física nuclear)cat
dc.subject.classificationMesons (Física nuclear)cat
dc.subject.classificationReaccions nuclearscat
dc.subject.otherQuantum chromodynamicseng
dc.subject.otherMesons (Nuclear physics)eng
dc.subject.otherNuclear reactionseng
dc.titleChiral unitary approach to eta'N scattering at low energieseng
Appears in Collections:Publicacions de projectes de recerca finançats per la UE
Articles publicats en revistes (Física Quàntica i Astrofísica)

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