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Título:
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M_(?) and N_c dependence of resonances form Unitarized Chiral Perturbation Theory
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Autores:
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Rios, G. ;
Hanhart, Christoph ;
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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Amer Inst Physics, 2011
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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 studies on the ? and ? resonances properties 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/N_c expansion gives a clear definition of q? q states, which is neatly satisfied by the ? but not by the ?, showing that its dominant component is not q?q. 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 rho ? ?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/35013/1/pelaezsagredo16libre.pdf
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