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Título:
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N_c and m_? dependence of ? and ? mesons from unitarized Chiral Perturbation Theory
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Autores:
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Rios, G. ;
Hanhart, C. ;
Peláez Sagredo, José Ramón
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Tipo de documento:
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texto impreso
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Editorial:
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American Institute of Physics, 2010
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Física-Modelos matemáticos
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Materia = Ciencias: Física: Física matemática
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Tipo = Sección de libro
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Resumen:
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We review our work on the ? and ? resonances derived from the Inverse Amplitude Method. In particular, we study the leading 1/N_c behavior of the resonances masses and widths and their evolution with changing m_?. The 1/Nc expansion gives a clear definition of ¯qq states, which is neatly satisfied by the ? but not by the ?, showing that its dominant component is not ¯qq. The m_? dependence of the resonance properties is relevant to connect with lattice studies. We show that our predictions compare well with some lattice results and we find that the ??? coupling constant is m? independent, in contrast with the ??? coupling, that shows a strong m_? dependence.
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En línea:
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https://eprints.ucm.es/35155/1/pelaezsagredo31libre.pdf
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