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Photoproduction of meson and baryon resonances in a chiral unitary approach

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Oset, E. y Marco, E. y Nacher, J. C. y Oller, J. A. y Peláez Sagredo, José Ramón y Ramos, A. y Toki, H. (2000) Photoproduction of meson and baryon resonances in a chiral unitary approach. Progress in particle and nuclear physics, 44 . pp. 213-222. ISSN 0146-6410

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URL Oficial: http://dx.doi.org/10.1016/S0146-6410(00)00073-9




Resumen

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.


Tipo de documento:Artículo
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©Elsevier Science BV.
Erice School on Electromagnetic Probes and the Structure of Hadrons and Nuclei (1999. Erice, Italia).
This work is partly supported by DGICYT, contract number PB 96-0753

Palabras clave:Perturbation-theory; One-loop; Scalar mesons; Form-factors; Scattering; Unitarization; Lagrangians; Amplitudes; Channels; Symmetry
Materias:Ciencias > Física > Física-Modelos matemáticos
Ciencias > Física > Física matemática
Código ID:35654
Depositado:12 Feb 2016 17:23
Última Modificación:10 Dic 2018 15:10

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