Por favor, use este identificador para citar o enlazar este documento: https://hdl.handle.net/2445/20991
Título: s-wave charmed baryon resonances from a coupled-channel approach with heavy quark symmetry
Autor: García-Recio, C.
Magas, Volodymyr
Mizutani, Tetsuro
Nieves, J.
Ramos Gómez, Àngels
Salcedo, L. L.
Tolós Rigueiro, Laura
Materia: Partícules (Física nuclear)
Teoria de camps (Física)
Particles (Nuclear physics)
Field theory (Physics)
Fecha de publicación: 2009
Publicado por: The American Physical Society
Resumen: We study charmed baryon resonances that are generated dynamically within a unitary meson-baryon coupled-channel model that treats the heavy pseudoscalar and vector mesons on equal footing as required by heavy-quark symmetry. It is an extension of recent SU(4) models with t-channel vector-meson exchanges to an SU(8) spin-flavor scheme, but differs considerably from the SU(4) approach in how the strong breaking of the flavor symmetry is implemented. Some of our dynamically generated states can be readily assigned to recently observed baryon resonances, while others do not have a straightforward identification and require the compilation of more data as well as an extension of the model to d-wave meson-baryon interactions and p-wave coupling in the neglected s- and u-channel diagrams. Of several novelties, we find that the Delta c(2595), which emerged as a ND quasibound state within the SU(4) approaches, becomes predominantly a ND* quasibound state in the present SU(8) scheme.
Nota: Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevD.79.054004
Es parte de: Physical Review D, 2009, vol. 79, núm. 5, p. 054004-1-054004-24
URI: https://hdl.handle.net/2445/20991
Recurso relacionado: http://dx.doi.org/10.1103/PhysRevD.79.054004
ISSN: 0556-2821
Aparece en las colecciones:Articles publicats en revistes (Física Quàntica i Astrofísica)
Publicacions de projectes de recerca finançats per la UE

Archivos de este documento:
Archivo Descripción DimensionesFormato 
573230.pdf724.12 kBAdobe PDFMostrar/Abrir


Este documento tiene todos los derechos reservados