Nature of the f_0(600) scalar meson from its N_c dependence at two loops in unitarized chiral perturbation theory
By using unitarized two-loop chiral perturbation theory partial waves to describe pion-pion scattering we find that the dominant component of the lightest scalar meson does not follow the q q̅ dependence on the number of colors that, in contrast, is obeyed by the lightest vectors. The method suggest...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2006 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/51723 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/51723 |
| Access Level: | acceso abierto |
| Palabra clave: | 51-73 π π-scattering Multi-quark hadrons Low-energy Form-factors Phase-shift Sigma Lagrangians Amplitude Light Resonances Física-Modelos matemáticos Física matemática |
| Sumario: | By using unitarized two-loop chiral perturbation theory partial waves to describe pion-pion scattering we find that the dominant component of the lightest scalar meson does not follow the q q̅ dependence on the number of colors that, in contrast, is obeyed by the lightest vectors. The method suggests that a subdominant q q̅ component of the f_0(600) possibly originates around 1 GeV. |
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