Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/20991
Title: s-wave charmed baryon resonances from a coupled-channel approach with heavy quark symmetry
Author: García-Recio, C.
Magas, V. K.
Mizutani, T.
Nieves, J.
Ramos Gómez, Àngels
Salcedo, L. L.
Tolós Rigueiro, Laura
Keywords: Partícules (Física nuclear)
Teoria de camps (Física)
Particles (Nuclear physics)
Field theory (Physics)
Issue Date: 2009
Publisher: The American Physical Society
Abstract: 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.
Note: Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevD.79.054004
It is part of: Physical Review D, 2009, vol. 79, núm. 5, p. 054004-1-054004-24
Related resource: http://dx.doi.org/10.1103/PhysRevD.79.054004
URI: http://hdl.handle.net/2445/20991
ISSN: 0556-2821
Appears in Collections:Publicacions de projectes de recerca finançats per la UE
Articles publicats en revistes (Física Quàntica i Astrofísica)

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