Photoproduction of meson and baryon resonances in a chiral unitary approach

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 is possible to reproduce the lowest lying resonances in mesonmeson scattering up to 1.2 GeV using the parameters of the...

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Detalles Bibliográficos
Autores: Oset, E., Marco, E., Nacher, J. C., Oller, J. A., Peláez Sagredo, José Ramón, Ramos Ruiz, Amparo, Toki, H.
Tipo de recurso: artículo
Fecha de publicación:2000
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/59877
Acceso en línea:https://hdl.handle.net/20.500.14352/59877
Access Level:acceso abierto
Palabra clave:51-73
Perturbation-theory
One-loop
Scalar mesons
Form-factors
Scattering
Unitarization
Lagrangians
Amplitudes
Channels
Symmetry
Física-Modelos matemáticos
Física matemática
Descripción
Sumario: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 is possible to reproduce the lowest lying resonances in mesonmeson scattering up to 1.2 GeV using the parameters of the O(p²) and O ( p^ 4 ) Chiral Lagrangian. The meson baryon sector can also be tackled along similar lines. We report on an update of these results showing some examples of photon induced reactions where the techniques have been recently applied.

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